It is your view that morals evolved (via the mechanism of evolution) to enhance the survival prospects of a species, amirite?.
This would appear a logical argument and I can empathise with you on how you reached this conclusion.
This theory would indeed explain many things. Like for example, how we see murder as inherently wrong, because we are reducing the size of the reproductive gene pool and numbers of individuals who will gain the chance to mate.
Incorrect. Genes do not act for the species; they act for the individual. Genes do not care about the survival of the species, only that the individual survives to successfully reproduce. The motivation against murder, therefore, is something different: an individual that must murder in its clan/group to "get ahead" is inherently inferior to those who do not (see: altruism); this however does not apply to out-group interactions (see: parochial altruism).
Likewise acts like rape could be condemned because it might be shown that the species reproduces more effectively through a means where individuals partner for life (as seen in swans), for various reasons, including possibly that it provides a greater incentive for parents to care for their own offspring and that it diversifies the gene pool by allowing the maximum number of individuals to mate.
Nice idea, except humans aren't monogamous. Monogamy instead arises when there is more chance of a male's offspring surviving if it stays than if it goes, and that itself is rare. Swans aren't true monogamists, either.
This is in contrast to the other systems such as that which occurs in packs of wild cats like lions where only the “alpha” male is allowed to reproduce and all other members care for his offspring.
Lol no, a more apt comparison would be wolves, in which an alpha pair (i.e. the fittest, though this doesn't necessarily mean
strongest) generally reproduce and occasionally allow other pairs to do so, depending on how well the prey is running that season. This is also common in birds.
Lion "pack systems" are such that males, often in tandem (i.e. brothers, or a coalition of males), will take over a pride of females, kill all the cubs to bring the females in oestrus (there's no use in expending energy protecting cubs that aren't of your own genepool), sire a fresh lot of cubs, which survive better when living in a pride than when a female is living alone.
Morals under this explanation fail to deal with some issues, like for example explaining what is wrong with stealing, or lying (IDK perhaps they can?) but I will ignore this for the time being.
That's because in human evolved morality, stealing and lying (i.e. artificially increasing your attractiveness to mates) is not wrong. They became wrong under artificial constructs.
If morals developed as and are a means to advance the survival of a species than how is it that today, you see it morals as an argument to justify engaging in homosexual sex, or to justify the use of contraception or the practice of abortion? These are all contradictions to the suggested purpose morals play in our life.
Evolved morals say
nothing about the issues such as homosexuality and contraception, because they aren't moral issues. They are social ones. Homosexuality in the animal kingdom is often a multiplier of attractiveness to mates, and indeed true homosexuality is not common (i.e. homosexual
relationships, as the drive to reproduce is greater than the drive for love/relationships/monogamy). But homosexuality in some animal societies certainly has a place and increases an individual's fitness (i.e. ability to pass genes on) sufficiently that it itself is passed on.
Homosexual sex cannot lead to the creation of life and so it cannot be justified with morals (because they developed purely as a means to advance the species, according to you).
Homosexuality cannot
directly lead to the creation of life, no. But that's not the point; otherwise, pack situations in the wild wouldn't exist (or bee hives, or ant colonies, or bird families). Whether its your genes or your sibling's genes that get passed on (preferably your own, but your sister's genes are better than none), the genes associated with homosexuality may also be ones associated with increasing your fitness, or behaviour that increses the fitness of your siblings to pass on your shared genes.
Likewise contraception cannot be endorsed either.
Sure it can. If by you not having children increases the likelihood that others of your genepool will survive, and survive better for it (i.e. having you around as an uncle to look after kids is better than you yourself having kids), then it's fine. Birds and wolves do this all the time.
Abortion is the worst of the three, where despite life having been already created, it is destroyed before the individual is given independence from its mother and the chance to mature and ultimately reproduce itself.
No, because the mother is
always more important than the child, genetically, until the child is capable of successfully passing on those genes. As far as ones genes are concerned (if genes could be concerned), a mother is already a proven survivor/passer on of genes and the child is not. In nature, if it comes between the mother's life and the offspring's, generally the mother's will always come first as she can survive to reproduce again.
So under your description of a moral’s purpose (to increase chances of survival etc.) all three of these acts, homosexual sex, the use of contraception and abortion would be the pinnacle of all that is immoral?
Sex itself doesn't necessarily increase the propogation of your genes. Sometimes
not breeding and looking after your sibling's kids, or your younger siblings, is better. Therefore no, they are not the pinnacle of "immorality" (in your warped view of morality as something to be judged.) In fact, you're going about it arse-backward. Morality
drives behaviour; it is not the arbiter of it.
Something which was apparently formed to promote the reproduction of a species cannot be used to justify acts which do not lead to the survival of that species, let alone acts which could be seen as inhibiting its survival (contraception/abortion etc.).
You misunderstand. See above.
It has been mentioned that morals change. However if morals are a means to increase the likelihood of reproduction (as you suggest), since the human species still reproduces in the much the same manner as it did back in the “cavemen” era when morality was first developed, there is no need for morals, under this definition, to change, as they would otherwise continue to increase the species’ chances of survival.
Human constructs of morals change. The "base morals" behind them do not.
Morals are not used for this purpose anymore, so, in the case of a Godless world, where they only developed as an evolutionary imperative (which hasn’t changed as humans reproduce in the same manner), does that make them redundant today if they are not used as such?
Redundant? Not at all. Hypothetical for you: ever given blood? Ever deliberately or subconsciously prominently displayed the "I gave blood" sticker they give you? That's display behaviour, or open altruism, which increases your attractiveness to females ("I'm so fit I can afford to give blood") by openly displaying this fact - kind of like peacock tails. Note the fact that this can be
subconscious. Instinctive. You don't choose to do it; you just do. It's part of your genetic makeup.
Morality drives behaviour. It is not the
arbiter of behaviour.
Or is the biological imperative implanted in humans as it is all life suddenly less important to us now than our justification of activities which merely distract us from our original and only biological purpose, the only justification in a Godless universe as to why we exist in the first place (reproduction above everything else).
Depends on how you see it. Why do people work? To earn money. Why do people earn money? To appear more fit and be able to support themselves and a family. Why do they do this? ...fill in the blanks.
Now it would make no sense for morals to change at all because in a Godless universe, a human is simply another life form and has no greater importance than any other animal, plant or bacteria. Like all other life, our only purpose would be the continuation of our own species at the expense of all others.
At the expense of all others? Even the wolf "realises", at a genetic level, that it cannot hunt its prey to extinction lest both species die out. Wolves will even limit their own reproduction to avoid this.
An atheist may believe they can live a selfless life without believing in God but this is not true, for if God did not exist, they’re only purpose in life is the biological imperative to reproduce and continue the species, this is a basic evolutionary premise, involving the success of the “strong” and failure of the “weak” to do so.
No. One's biological imperative is not to continue the species. Genes don't give a shit about the species. One's biological imperative is survive and
pass on one's genes. Totally different kettle of fish.
This primitive biological goal is something that is not achieved through self-sacrifice and the supporting of others beyond what is necessary for the species to continue (e.g. sharing food, hunting in pack etc.) which therefore renders such acts meaningless.
YES IT IS. It astounds me how ignorant you are of evolutionary systems with regards to it.
Animals do not have time for hobbies or to chase their desires, they exist to live and reproduce, and this is the sole goal to which all their efforts are ultimately directed.
One could argue that they are not smart enough to do it, but then you look at bower birds, the males of which elaborately and obsessively decorate their nests to attract females. Other animals learn complex song and/or dance routines to attract females (and in some cases, females learn them to attract males); male humpback whales learn new songs every year, which are passed around the globe in a cultural exchange. What is hobby-making and desire-chasing but an evolved form of this behaviour, and play behaviour?
Animals do not willingly sacrifice themselves for the preservation of others in their own species and are not even aware of the concept.
Of course they are not aware of this concept, but it doesn't mean it doesn't happen. Take the bee, who will sacrifice itself with its sting for her sisters (or more importantly, the offspring of her supersister, the Queen, who is the only adult in the colony who can reproduce).
Likewise, humans wouldn’t be able to grasp the concept either (as the thoughts of the individual are only concerned with himself reproduction as to fulfil their biological imperative), if their only purpose on Earth was to reproduce.
Thoughts != instinct, but it does drive behaviour.
In light of this, I reach the conclusion that morals must represent something much more important to the human than what you suggest they are, an evolutionary adaptation to assist and promote reproduction.
I don’t pretend to be an expert on the science of evolution, but since the only source quoted as part of the argument behind it is Wikipedia, I’ll go out on a limb and make the assumption nobody else here is an “expert" either. That said, please correct me if I have made a mistake with your interpretation.
/Rant
Hoo boy, have you made mistakes.
If you can handle textbooks or relatively dense science books, read these:
Evolutionary Analysis - Scott Freeman and John Herron
The Selfish Gene - Richard Dawkins
Rise and Fall of the Third Chimpanzee - Jared Diamond **