I got interested because I've been surfing around and this looks like the best site
I got interested because it looks well moderated and not let run wild
Other (please specify) ==== There was the least idiocy on this forum.
But don't get me wrong, there's still alot. The religion and philosophy section is a tragedy, really, and there are quite a bit o' partisans here.
Still, best I could find, I like the layout and extras, and it has a dedicated member base.