I'm not a believer in the Christian theory of creationism. I'm actually an agnostic.
However, for those of you that have decided to interpret the concept of Adam and Eve as incestuous - the concept of Adam and Eve may just be an idea, a metaphor. Whether you take it literally or not, is up to you... However, then there's a good chance you'd take everything else literally too... Which would be rather unfortunate.
But, I've gone through the 'god made everything', 'science can explain everything' phases. And i've realised that religion is almost entirely subjective, and neither science, nor religion can actually explain everything.
That's my POV.