That wasn't the point of the OP. The OP is asking 'why be a fan if you don't enjoy the thing you're fanatic about?' And as near as I can tell, the answer is that some people just like being miserable.
What I've never understood is why people believe being *miserable* in regards to a pass-time is somehow noble or intellectually realistic. If all that misery changed anything, I might see their point, but all it does is lead to frustration. It's pointless.
Now, on message boards, there's a psychological effect where people like to insulate themselves from disappointment or from putting themselves out there and being wrong because the enjoy the karma-effect of being able to say 'I told you so.' That's always been the case, and it's the reason a fair number of posters here adopt a 'realistic' position.
I've always had a hard time telling the 'realistic' position from a fetal position, myself. It's not like we don't all know the odds are against the Cowboys winning the Superbowl in any given year. We all know that realistically, the odds of success are slim and that a handful of plays makes the difference between a division crown and missing the playoffs. We all know that if you bet the field, you're more likely to win. So what? So probabilities favor betting against the likelihood of a single team winning. Even 16 years in a row. You can do that and be right more often than not. Whoop-de-do.
If you don't like your odds, don't bet. But what's the point of complaining to the odds-maker? Is complaining realistic? It's not. What's it going to change? Is it going to make you more likely to win? The answer is, it's not. Complaining about a situation you cannot change is not realistic at all. It's just annoying.
Now, do other Cowboy fans have the right to be annoying? Sure they do. And that's a good thing, too, because a lot of them indulge in the privilege. Every. Damn. Time. They. Post. Do they have the right to complain about things that don't make any sense? Sure they do. So, they do. It doesn't make them any less of a fan, or at least not enough to really matter.
What it does mean is that they probably enjoy the season less than posters who prefer to place their bets and let their money ride. That might not be true of all of them. There are such things as masochists. But I believe it's true of most of them. What I don't appreciate is that some of them seem to think they've got an obligation to make the season less enjoyable for the rest of us.
And, what is most ironic is that the self-described realists on this board--if you were to ever meet them in the real world--are almost certainly less likely to tackle problems head-on than many of the homers and sunshine-pumpers. From my experience, positive people make positive things happen. Negative people complain about why things aren't positive.
Maybe some of you out there have experienced the opposite. I don't know. I'd be interested to hear about it if you have. From what I've seen, practicality and cynicism don't go hand-in-hand all that often. It's optimism that begets resilience and resilience that begets success. Pessimism begets defeat. Maybe it's the case that either are realistic outcomes, depending upon your outlook. If that's the case, than we're all realists here, beneath the surface, and the only difference is that some of us are less miserable about it than others.