Interestingly, the nones seem to have the opposite problem, a lot of converts but a surprisingly low retention rate.
I wonder (and I really just mean wonder - this could be completely wrong) whether some Evangelicals are reporting that they were raised as "none" when really they were kind of casually Protestant. I'm thinking in connection with Evangelicals' tendency to use the word "Christian" just for born-again Evangelicals, or their tendency to deny having "religion", because their true Christianity is not a "religion". There is a kind of rejection of normal religious classification because it makes Evangelical Protestantism look just like one group among many.
