Oh, we'll all root for our team but some feel the need to hedge their bets for a "told ya so, you bunch of Kool-Aid drinkers". Predicting doom is the fail safe, at least they can come back with that should the team step in it.
The ones that predict a loss are not any happier than the other fans when that happens. If you've noticed, even the ones that are really down on them still get down on them when they prove them right. Can't even take any satisfaction in being right.
Fans are a weird bunch of ducks. Some try to diminish what is purely emotional with logic. Some just make the conscious decision to believe, regardless of the circumstances.
I was a card carrying pessimist most of my life, and proud of it and especially using that word "realist" against optimists, which inflamed them. I figured hey, either I will be right or pleasantly surprised, win-win.
But there's magic in believing, an additional payoff and it's not bragging rights. It's that satisfaction in believing in something, that was basically against the grain, and having that fulfilled. You actually feel a part of that happening, not just an observer. You know you didn't will them to win but can't help feeling a part of that victory.
One thing I have noticed different about the Cowboys, the Booger element. He tries to sell the team so hard that if someone believes in them, they feel they're being sold. When it doesn't happen, they feel duped and suckered. If I like what I bought, I bought it. If I don't like what I bought, it was sold to me. Too many call him a great salesman, he isn't. He's a pitchman, big difference in the two types.
Regardless of what fans put on this forum, they are all of the same mindset as that kick off approaches. Some have just, unsuccessfully, tried to galvanize themselves against disappointment. Lose and we're all disappointed but some go the extra step and are angry and often they're the ones that were most negative before the game.
Most valuable lesson this life long pessimist learned? It's OK to be wrong. That's when I gave it up.