I know there are many other things much more productive that I can be doing, but I think it's my stress reliever. It's someplace comfortable I can be, safely confronting people in ways I'm simply incapable of doing face-to-face due to my inexplicable need to not be confrontational to people's faces. I do know it's also expanded my horizons quite a bit, and I've learned things I never could have learned from doing any of those other "productive things." So it's not a COMPLETE waste of time, as long as the topics you debate are broad. But yeah, I know I do it too much. Everybody has their vice, I suppose.