I live in my head. I feel the most happy, alive, excited, and content with life when I'm just day dreaming. I think I have spent 75% of my life just thinking and imagining things. I like day dreaming more that I like socializing. If I'm out doing things and being social like a normal person, unless I am having a lot of fun, I am usually totally bored and I can't wait to go home, just sit in my room and think. Am I weird?

Thats ok, but don't isolate yourself from the world. Even if you don't like socializing, its good to socialize at least a little. It helps you grow as an individual.