I'm using "casually religious" to mean "I go to church because my parents always did, but I don't really believe in that superstitious nonsense." Catholicism in particular is going through a stark divide right now, because the "Christmas and Easter" Catholics are no longer bothering to show up for Christmas or Easter. So at a glance, it looks like the Church is getting more conservative, but it's really mostly attrition.

But that's all outward religious practice; my comment was more getting at my suspicion that many human behaviors are effectively religion in disguise. Where do axioms come from?

Where did religious axioms come from?

From those who sought to control through the theft of individual power and the consolidation of that power to a ruling class.