Are you speaking from experience? I'm not gay but from what I know from some of my gay friends is that the so called 'choice' to control their sexuality is pretty much non-existent. I'd imagine it would be the same for you if you were told you could never perform any sexual acts for the entirety of your life, you wouldn't succeed in it. I'd say its about 90% genetic.
On the other hand, religion, which is fine when it doesn't impede on society. I don't see why growing up (in any religion) and having a piece of scripture dictate the rest of society having to adapt to an outdated, irrelevant reading, is okay. Islam takes more away from society then it gives, sure you've got your 'majority' who practice peacefully, but is that really worth all of the negatives that come with it?
As religion grasps over a country, look what happens. Iran, Iraq, Saudi Arabia, Yemen, Omen. Oppressed free speech, lack of human rights, discrimination of women, corporal punishment for petty crimes, discrimination against gays (including death penalties), polygamy, child marriages. Look at that summit they had at Lakembah mosque not too long ago, calling for Shariah Law to work along state laws in certain cases. You give any religion a slice of a cake, they'll want the whole thing.
It's just plain and simple, the world works better secularly.