Lucretius

name me an ethical statement made or an action performed by a believer that could not have been made or performed by a non-believer. As yet, I have had no takers. (Whereas, oddly enough, if you ask an audience to name a wicked statement or action directly attributable to religious faith, nobody has any difficulty in finding an example.)

Nonetheless, the working assumption is that we should have no moral compass if we were not somehow in thrall to an unalterable and unchallengeable celestial dictatorship. What a repulsive idea! As well as taking the axe to the root of everything that we have learned about evolutionary biology (societies that tolerate murder and theft and perjury will not last long, and those that violate the taboos on incest and cannibalism do in fact simply die out), it constitutes a radical attack on the very concept of human self-respect. It does so by suggesting that one could not do a right action or avoid a wrong one, except for the hope of a divine reward or the fear of divine retribution. Many of us, even the less unselfish, might hope to do better than that on our own.

Religion invents a problem where none exists by describing the wicked as also made in the image of god and the sexually nonconformist as existing in a state of incurable mortal sin that can incidentally cause floods and earthquakes.