Bear with me. This is going to get a bit crass!
We had a discussion on the inherent paradoxes of Altruism recently, you can apply the same sort of thought processes to pleasure, whatever we do we are doing it in the name of Hedonism? Now you don't have to use the P word at all. One can talk of well-being (Aristotle loved this term if I recall), contentment, satisfaction or even when at it's worst a cessation of suffering. It seems to be something as a species we all have in
common? That we
always act in ways that will promote these for the self, or others that in turn are important to the self (and so back to the self again!)
Why a religion though? Well when you get down to it, can we attribute certain aspects of religious activity to our (especially modern/debauched) hedonistic behaviour?
Scripture=Self help books?
Ritual=Where to start, look around, you'll see that everywhere?
Faith=Totally! "Tomorrow I'll do/buy X. Tomorrow will be better!"
Worship="There's a new I-phone out?! OMG!"
Prayer="Oh please please don't let the new Cameron film be a steaming pile of dog manure!"
Priests (whatever you call 'em)="Experts" on anything out there? Health, sex, food, music whatever the heck you want there.
God(s)=That's a lot more tricky mind you I'll grant.

Oh wait, duh. The cult of celebrity!
Don't mind me, in a flippant mood.
EDIT. Forgot prayer and had a brain fart about gods. Celebrities, of course!