I don't think it's an ideal situation, but each to ones own I guess?
I just don't understand from a maturity and life experience point of view, why (hypothetically) a 23 year old would want to date say, a 15 year old. They're two completely different ages, and are at very different times in their lives. As a 20 (nearly 21) year old, I'd never really look at anyone under 18 in "that way", anybody under 18 is just a kid to me, and I find it scary that some of them are pursuing people who are like 10 years older than themselves.
I try and see debates like these from both sides, but I personally can't see it. When I was between the ages of 14 - 18, I only ever dated/liked guys my own ages or a tiny bit older/younger, I knew in my head that anyone 18+ was too old for me.