I joined my first forum six years ago. At first to learn more about a game (Sims 2) and I got stuck there when I found a place on that forum where you could discuss things from the real world. I particularly needed that, as I felt really lonely and I had things I couldn't discuss with the people I knew. Nowadays I join forums if I want to discuss a certain topic and I stay if I like the atmosphere. It doesn't have anything to do with loneliness anymore.