Paranoid Introvert-SchizoSocial Issues

I got these friends from school that are not really bad people at all, just kinda unfunny sometimes, but thats ok. The real issue is that im not comfortable with them, not in a tell-a-little-secret or LAY-IN-YOUR-LAP way, i dont really care what level of confidence and intimacy i have with them, i just cant stand be with them for longs periods of time (impossible when you go to a full time school). Again, its not THEM, i just don't feel comfortable around any kind of people(except the mosh pit), i much prefer to be alone listening to music than talking about some irrelevant affair. Not only that, as i come home always tired and in a killing mood, with no energy to do simple tasks like preparing a meal or even play The Acoustic. I do not come home tired of thrash-talking all day, i come home tired from people and they mundane and boring subjects, and i think i cannot take this fadigue no more, but i don't mean to be disrespectful and selfish.