I think this is the time we should start using some data in this discussion, but my view is that people in their twenties are doing much more sex today. Due to tech (eg Tinder) and less stigma for sexually active women.
I mean, on the net you'll often hear stories about kids scoring big but that's survivor bias. You don't hear anything from those who didn't bang.
[1] http://www.telegraph.co.uk/women/sex/no-sex-please-were-mill... [2] http://time.com/4435058/millennials-virgins-sex/