Naw, I get real bored and read over there once in a while. It is not true that large forums have problems, just ones that are poorly run. That forum is sad, but I like reading the troll posts, and skimming the responces of people that can't help but rise to the bait. Can't say I get much from looking at any of it, but as you say boredom can be crushing...
I am on a Lab forum daily. 40-150 posters an hour, and trolls are a rarity. We have rather civilized arguements because it has all been said before. The mods will lock subjects that seem likely to cause problems but they don't delete them for no reason, and bannings are uncommon.
http://lab-retriever.net/board/forumdisplay.php?s=&daysprune=&f=9
It is divided, and the mods will move you if you put the diareah and photo threads in with the coffee talk in the general section, but for the most part, you can talk about whatever you want.