"Yes and i use it everyday"
It's one of the few ways I can communicate for free at irregular but frequent intervals with a lot of my friends, those who are relatively far away. Why
wouldn't I use it?
EDIT: Just for the record, though, since a lot of you guys seem concerned about how people use Facebook:
I'll catch up with my (physically) close friends face-to-face every second day. And for the aforementioned more distant friends, I try to see them for 2-3 days every 2 (occasionally more) weeks.
But in the mean time, for the distant friends, Facebook is great. I don't use it for games or apps (except Robot Unicorn Attack, every now and then

), I mostly just use it to keep up with what people are doing, and organising the next time I'm coming down to see them again.