I prefer the Q & A section to the forums, hands down. To me the answers page is more fun with a very, very, very little structural chance to exhibit and/or find oneself on the receiving end of nastiness. Now that I think about it, one problem with the forums is that the "hosts" (I think of the hubbers who pose the original question/meditation or what-have-you as the forum thread "host") keep the threads going too, too, too (did I mention 'too') loooooong.
The respondents run out of fresh things to say and so the conversations always become circular. With this circularity comes the nastiness. Also, as Americans (I assume, for some reason, most of us are Americans -- I could be wrong of course) we are not very good at conversation.
The tendency is usually to try to pummel the other person into submission with the "correctness" of our own views. This is certainly so with the political and religious forums -- its better to write engaging hubs on these topics and perhaps the comments they attract will provide a much, much, much more coherent civilized discussion, where all involved actually learns something from other people.
I'll stop now before this turns into a hub. But I'll just add that the other forums, like the ones on Entertainment or something like that are alright.