But there is no evidence of that in the current world. Current societies that have a decresed religious activity among their general populous are happier, have less divorce, better health care, stronger families with two parents, more civilty, less crime. Yes, a lower birth rate, but maybe because they are more socially responsible and do not want to over compensate? A lower birth rate does not lead to social decline. Only more resources for the population as a whole.
And there was no evidence in the other thread that it was a lack of religion that caused the social decline, only that there was a social decline and at the end of it, a new religion was formed. Is it possible that the problem was the differing religions and NOT a lack of religion?