Eliza, I don't think we can blame our religious beliefs (or anything else) purely on our genetic make-up. We also have brains. I certainly have a predisposition to spirituality and have spent a large part of my life examining many of its aspects. The result, however, is that I have come to the conclusion that there is no single entity or 'first cause' that we call god who has any interest in our lives, and that everything necessary to satisfy our spiritual needs exists here on earth and within ourselves, perhaps not always within our immediate comprehension, but here nontheless - Wordsworth's "...sense sublime of something far more deeply interfused, whose dwelling is the light of setting suns....". I think Husserl was right when he said that perception is intentional - all we need is the intentionality.