I mean, I don't think there are going to be hordes of 14 year olds running out looking for 30 year olds to fuck, but when such a case arises without coercion I don't think it should be illegal. And when I was younger (14-16) I did know some girls who fucked guys in their 20's and in some cases even older, and they sure were not coerced into doing so. Of course the vast majority of the girls I knew didn't , but some did.