Nick Spencer considers the question, “Is there a God Instinct” in a series for The Guardian. He concludes that evolutionary explanations—both modern and historical—for religion are severely lacking and that it appears that unbelief is what needs to be explained. Even if the claims of religion aren’t true, that fact won’t be determined by the hard sciences.
No longer able to find refuge in the idea that belief in God is an unnatural or neurotic accretion on human nature (save the rather clumsy virus metaphor that is still doing the rounds in some quarters), the atheist finds himself saying: "Yes, OK, religion may well be an inherent part of human nature, but that doesn’t mean it is good or true.
Perhaps not, but few serious religious believers would claim that any scientific discipline is competent to adjudicate on the goodness or truth of religious claims.