Unless, of course, you look around. Alot of young people - believe it or not - are becoming highly religious. My guess is, they have kids. Those kids are raised religious. It builds back to the normal thing. Or, in other worlds, the wiggles meet up in the middle.
And quite honestly, I don't think anyone, religious or not, who has any brains believes in 2012. Yeah, nine different psychics, callenders, fortune telling toys, etc. all point at it, but it's definately a bunch of crap.