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?