Why would I not WANT to be social? I have Aspergers?

I have Aspergers syndrome. Besides work I spend all of my time at home alo e with my grandma. I am 22 years old, I don't date, I don't go out with friends, etc. I basically sit on the swing at the park an listen to music, sit on facebook, or watch tv. Part of me wants to date and make friends an part of me doesn't. I am basically addicted to facebook, but will never "chat" with people. Only message them back and forth if they message me about something or I message them. Even fellow aspies. I go to an aspergers group too and some of them want to hang out with me. Part of me thinks I should, but the other part just wants to spend all of my time thinking. What is wrong with me? Is this unusual? I also have insecure attachment issues with people if that matters.