Yes, pessimism is a terrible style to engage in 24/7. Politicos or Gov't officials might refer this as the "Burden of Truth". Let me explain.
Moaning and bit***** about other people's world-views and not listening or understanding their points (you don't have to completely accept what they're saying) but don't completely reject them. There is truth (and lies) in everything that people people say or do.
TxGolfer isn't anywhere to close to being pessimistic when backing up his arguments. What you're talking about could construed as pessimism, but it really isn't. Yes, when someone on the opposite side of the political/social/economic spectrum of whatever direction starts to get into the background "facts" (we're not in court, so there's little thing called trust.. add some knowledge) and adjusts your world-view, you may feel like it's pessimism, but it's not. It's called change. Good businesses and states survive because the people that are part of it ADAPT. Even if you don't agree with someone, you *should* be "civil" and listen. You don't have to, but it's in your interest to build respect for other people so that when you get on your soapbox, people won't run away. I may not agree with TxGolfer on every issue, but I respect his ability to put in the time to explain his logic. Hopefully, he sees the same thing in myself. Even if he calls me out on it, I respect that.
All I'm really interested in is truth (which, hopefully allows for peace...six billion people on the planet...) and I think the best way to engage in it is by civilizing "pessimistic" pieces of society. We would have infinite resources and zero labor costs if we were to believe that everything in society shouldn't have any bits of pessimism. I believe other people on this board would agree that when an argument presents itself and people might challenge it, it should all be done without personal attacks of character. For many, arguing (however pessimistic the issue may be) represents a chance to hear different points of view on a issue, which in turn is actually a really good thing. Believe that people here are listening because they do want to understand the problems that people run into and make those lives better.
Point I'm trying to make is....share your bubble. There's not enough space for 6 billion egotistic bubbles on this planet.