That suggests that you believe that you already know what the truth is. If people busy themselves arguing with people who don't bend a knee to their version of the truth, then content would indeed seem to be the issue. It might help if people stopped hurling insults (dishonest! deceptive!) at those who are perceived as disagreeing with their favored version of The Truth. As far as preaching goes, that happens both ways. You're convinced that you are right. So what's wrong with other people thinking that they are right too? From their prespective it's you who is sticking his fingers in his ears while going "LA LA LA" and refusing to listen to what they say. In my opinion, the religion, paranormal and ufology threads could be an excellent opportunity to examine no end of important and fascinating issues in epistemology and the philosophy of science. But in order for that to happen, care has to be taken on both sides to avoid threads degenerating into personality-driven flame-battles.