Cos it mediates the personal experience - the most exciting aspects of religion, gnosis if you will - with those of community and wider society. It's has an inherent conservatism because of this. But maybe that's a refuge in today's over excitable world.a lot of that stuff is more cult (or occult) than religion (I'm using cult in a positive sense here not disparagingly)
I'm talking about base religion. why is it so dry? base materialistic music of the flesh is far more lively than it.