My hypothesis

[Mister Agenda]

And you don't see this ever dying?  Even when there are no other churches around?  This seems to exist purely as a secular alternative to church.

While there may be no good reason to keep it, there's no good reason to get rid of it either. The aspect of organizing on a regular basis for community and teaming up on charity and justice projects has value and is worth preserving, though it could be less religious-y. I would give it a catchier name, and replace the choir with a rocking house band, but otherwise it's not really broke.

But what I was actually talking about becoming the norm was 'casual humanism', not religious humanism. People who are basically humanists because they absorbed it from the culture, not because they consider themselves humanists. A lot of people are already like that, they don't let whatever supernatural beliefs they may have keep them from not being dicks. More of them would be an improvement. Especially around election time.