I have that same problem. So much so that I moved away from my parents, 2000 miles and into a friends' place. That forced me to (eventually) get a job, and now I'm (mostly) paying for my own stuff, but-

I still spend almost every free hour I have in my room. I don't want to go outside or meet people or do anything but sit here. And the worse thing? Now I feel I've earned it. Eventually I won't know anyone personally, just random acquaintences online. :/ At least I still have my roommates kicking me out occasionally, I guess.