What do you like doing? I would love to be alone a lot more than I am now. If I didn't have to go anywhere, I would stay in my room all day, reading or teaching myself html or whatever my head was interested in at the moment. I'm different than you, then, since I think that I "have a life" while engaging in solitary, supposedly "anti-social" behavior, following whatever idea pops into my head.
What about TV, then? Do you have TV? You do have a computer, and there are, ah, certain websites that let you watch television for free. Here is one: http://tv.peekvid.com/
What about chatting online?
Computer games? Video games? Putting on a coat (or 2 or 3) and going outside? Watching movies. Throwing things that go "thwack" against the outside of the house. Standing on your head. Making some delicous sounding recipe for one (or two, just so you have leftovers.)
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Superman wears Jack Bauer pajamas.