I was one of the first people on it at my school, back when it was college only.
I do enjoy facebook. I am a very social person, and when I graduated, I moved 500 miles away from home and knew approximately 3 people in the area. Facebook has really made it easy to keep in touch with friends from back home and see what is going on with their lives. Without it, there are hundreds of people I would have lost all contact with.