I have a buddy who's 27 and still a virgin. Apparently he's holding out for marriage and thinks he's actually going to score another virgin as his wife. I personally don't think they exist anymore. Any virgins these days seem to be in elementary school.
There's nothing wrong with waiting until marriage, although I agree it's going to be difficult to find another virgin to marry. He should either go for Christian chicks or try the fat & ugly ones nobody ever wanted to sleep with.