It's the fact that I don't want to be even remotely tied to underage drinking, as someone of legal age.But I'm not saying that it's the one and only (or even primary) reason, like I mentioned earlier. A 19 year old dating a 30 year old is a little different. You may be mature for your age, and you may really like older guys, but you just aren't on the same playing field that they are.Getting guys isn't hard, getting/maintaining relationships is hard.
Honestly, your chances of getting with an older guy are basically 100%.
A classier, normal older guy isn't going to hit on you if you just flirt with him -- we're used to the flirting game and younger women being "cute," and we'd never put them on the spot by crossing the line -- so you're going to have to drop some very heavy hints or just get downright blunt about getting together.
The 22yo I dated in my 40s said things like "boys my age are just boys, I like older men, and besides girls mature faster" and a few other old-guy pick up lines that worked well. This might be a hard thing to overcome as it is for most women just interested in guys their own age.
The other reality is most wide age-gap relationships tend to be pretty short, and pretty bedroom-focused. But someone just under half my age is at a different place in her life.
There's nothing wrong with that, but if you go into one thinking you're going to land a long-term boyfriend or husband (it I would not date a 19 year old. Unless she was a very rare 19 year old, the power differences and practical issues would make it difficult for me to cultivate the sort of relationship I'm looking for.
Would it be weird for you, would you take them seriously?