Everything I could say has been said here already. The age restriction in America has made it cool for underage kids which is dumb. People who need to drink to have a good time are pathetic. It IS genuinely fun to drink socially and responsibly though. Really, really fun.
OP (and many others here), I was definitely in your shoes once and know plenty of people IRL that are underage and feel the same. Then I turned 21 just in time for senior year of undergrad. Those weekends out with massive amounts of friends and friends of friends at the bar and having adventures was definitely the highlight of my life so far. And nothing makes D&D on a Tuesday night more fun then drinking copious amounts of cheap beer, eating whatever we could find in the apartment, and making drunken mistakes that got us into really bad fictional situations.
Furburt said:
I can sort of get the attraction, but I have better things to abuse. Something that doesn't taste like paint stripper to me.
If taste is the main thing holding you back (which I'm sure it isn't), you just need to try a variety of alcohol. Guinness does taste like paint stripper, and while lagers are really popular here in America I think they taste like shit. I prefer wheat ales for my beer, and cordials like Bailey's, Kahlua, Grand Mariner, Amaretto, etc. for my liqueur. Nothing is better then finding an alcoholic drink that actually fits YOUR tastebuds.