That would be good news. (Although I'm pretty sure almost every 23 year-old here has Facebook.)

23-year-old here. No Facebook.

Same with me lol. Only have an account for developer purposes since I have to put it in every app I work on haha.

I was really into MySpace and because of that I just sort of naturally transitioned into Facebook probably somewhere around 2007-2008 (I don't remember exactly). Though MySpace served as a typical teen social tool throughout junior high and high school, it became less interesting to me after graduation (strangely enough, right around the time you start seeing less of your friends in-person) as I spent more time with fewer people (family and my girlfriend, mainly).

Right around the time that my girlfriend and I went off to university together, I pretty much just stopped using it. All of the (little) social interaction I felt I needed was satisfied in-person, and so I didn't really need it anymore. I used Facebook a couple of times (quite literally), but at some point I got fed up with hearing everybody talk about it all the time (I think the foregone conclusion that "everybody has one!" really irked me), so I looked at it all, realized that I really didn't use it, and deleted everything.

Though I still get the occasional friend trying to convince me to come back, I haven't, and I've been OK. I really don't need another Internet distraction, and I don't feel like I've missed out on anything substantial because of it.

Wait till you have kids. Facebook works really well as a "sharing photos of the grand-kids" for all of those grandparents and great-aunts around the country/world

Yeah, that's still more of an "if" than a "when". It's often more energy than it's worth dealing with other people now, let alone children.

could you tell us something about your friends/family situation (geographic location, socioeconomic situation, education, etc). i know three (!) people who are not on facebook.

Define "not on Facebook." I have a Facebook account, but I haven't actually logged into it in over a year and the last post made to it was probably 3 years ago.