According to this NYT article one of the most influential evanglelical leaders, Ron Luce, says,
"“I’m looking at the data,” said Ron Luce, who organized the meetings and founded Teen Mania, a 20-year-old youth ministry, “and we’ve become post-Christian America, like post-Christian Europe. We’ve been working as hard as we know how to work — everyone in youth ministry is working hard — but we’re losing.”"
Of course, the reasons the fundagelicals give for this are not the reasons I would but, still, good news is hard to come by and I'll take it.
They think it's the work of satan.
I say it's cause they're wackjobs and the kids are finally noticing.