Well, because I got sick of watching the retarded AI standing around and being stupid, I now just watch commentary, but I take it unnaturally seriously. My heart rate even increases if I'm leading by a goal or hanging onto a draw against a stronger opponent and the commentary reads ''Blah Blah has beat the defence, only the keeper to beat. . .'', ''His shot hits the crossbar!''.
I also get extremely angry if my team performs terribly. I swear a lot as well while playing and I occassionally pull my hair as well. Oh yeah, I take it seriously, and that is quite unhealthy to be quite honest.