I hear where you're coming from. I definitely take long extensive breaks from the forum for the same reason. I think you'd be suprised at how "liberal" I can come across in real life, but the nature of these forums causes you to pick a side and argue it.
I know exactly who you're referring to in the forum, and one day I actually decided to take them on regarding the Gitmo closing because I thought their logic was flawed, but I can't go against them too much without looking completely bi-polar.
Maybe after a break you'll feel comfortable coming back?! The forum definitely needs balance, and I don't like the circle jerk any more than you do.