Do you actually not like it the way it is now? I mean it might be bothersome for you but perhaps you like the bother deep down?

But If you really, really don't like it why can't you have the best of both worlds. Don't be an ass but subtly discourage close friendships, when people ask you to go places, half the time make yourself busy, if they talk about feelings listen but don't talk about your own, don't offer advice to problems, talk about stuff rather than shared experiences or about each other, like what books you like or whatever else.

Don't make yourself friendless, just make yourself happy with a certain level of friendship, and later, if you feel the need, you can allow them to become deeper friends or if the case may be cut them off entirely.

Though obviously you are sharing feelings here, maybe friends aren't completely out of place for you, maybe they just aren't the right friends. You might find eventually there really are people worth that extra effort.

Well, after all that, I do understand what you mean though, I often distanced myself from friends, because I really like my independence but I have a really close family, so even if I don't have close friends I am never alone.