3) doesnt use facebook because it doesnt really fit into their lifestyle. Doesnt have time for it, or nothing about it really speaks to them. To each his own. Ditto with the guy who doesnt own a tv or just owns one with a dvd player because he doesnt care for tv or cant find anything he deems worth watching.
This is pretty much me. I don't have some huge urge to tell people every detail of my boring assed life. Sorry to disappoint you all, but it really is that non-exciting. At this point, I kind of use it as a litmus test of sorts. If people seem to think I'm some sort of social reject, or if they would rather FB or txt people instead of actually talk, then they are pretty much someone that I would rather not know. If for no other reason than it is too difficult to decipher mood or inflection through technology.
I also don't have cable or satellite to my tv. Mostly because the vast majority of what I have seen on those channels are mind numbing or filled with misinformation. If that was what I am truly looking for I would get myself a Facebook account.