In the long run, since women have longer lifespans on average, younger guys are kind of better because they're more likely to live as long as you do. =)

Yes, the most amazing guy I have ever met (and crushed on, of course) is younger than I am, but only by two months. I haven't seriously crushed on a guy younger than that... okay, maybe one by a year, but not younger than that. xD But I have felt feelings of attraction for them, and I know what you mean. It is awkward.