I simply don't see the benefits of Facebook as outweighing the creepiness and totalitarian potential. What do I get from Facebook that I don't get from "analog" social interaction, that is worth giving them information on a good portion of the websites I visit, the social interactions I have, the pictures I take, etc.?
An easily maintained wide network of shallow relationships which is extremely useful when looking for a job, or something to do on Friday night, or the fourth person to split the costs of gas when going to a larger event... Basically, it allows you to spam people you barely know in a socially-acceptable manner.
Benefits of a network like that may be far greater than a small group of trusted friends. I'm not on Facebook because of its creepy/stalkery vibe but there is value there, probably a lot of it.