Dating younger guys?

There is this one guy I kinda like. But the thing is: he is 18 and I'm gonna be 21.
I think that our society is totally fucked up. Why do men get to date younger women and we don't? Because of this whole "system" my imagination of the perfect guy is truly unbelievable. So my question is: how would you react if you would meet us and we would tell you our age?
Normal? 
Weird?