Any religious person who thinks that their religion is necessary for a good, civilized society, or that only belief in an ultimate judging deity leads to moral behavior, should check out Society Without God, by Phil Zuckerman. It’s a study of what are probably the two most atheistic societies in the developed world: Sweden and Denmark. And what do we find there? Pretty much the nicest places to live on Earth. They beat the very religious America in essentially EVERY indicator of a happy and healthy society (crime, education, life expctancy, literacy, etc.). And all without God.