I'm 30. All my friends use facebook and it's been very hard for me to leave. I have left though and literally have lost contact with people merely because they always forget to invite me to things, and we've gone our separate ways. When I joined The Facebook, it was just a fun place for college kids. When I left it was a mega evil empire where you could lose your job, be put in prison, get lectures from concerned parents, and upset people. That's not fun, so I've logged off forever now.