I'm an eternal optimist about the teams I cheer for, I legitimately don't get the point otherwise. Sports have made me sad, never pessimistic or miserable. If I felt I could no longer enjoy the teams I'd root for, I'd just quit and I wouldn't hang around to try to find company in my misery, I'd just remove the source of the misery.
It takes all kinds though, and as much as I talk crap to Pete, Trim, and sys on the sports boards, I don't think their outlook makes them bad people, I just don't get it but I don't have to either.