I feel you. I can play the piano too, and no one really cares. I was even rejected from my friend's band to be a keyboardist because "keyboards aren't metal enough". Then again metalheads have always known to be obnoxious as hell about what is and isn't metal. Ah well, they kinda suck anyway.
Anyway. I have friends I hang out with occasionally but I really can't put forth the effort to get a girlfriend or whatever, it doesn't matter to me. When I have college i'll hang out with them on campus or whatever but after that, I mostly just browse the internet and listen to music/watch anime. I'm "lonely" by choice.