Also true. And after a couple of generations, the familiarity of stable centers-of-organization would make them easier to organize around than novel practical purposes.

That said, there are enough practical purposes that were consistent enough from generation to generation during the period that most of our religions evolved that in that case I would expect to see, say, farming exert the same kind of social-organizing influences that, say, Christianity did.

Which maybe it did... I don't really know that much about the comparative roles of farming and Christianity in the social organization of the last couple of millenia.