Hit a marine aquarium forum if you think beekeepers are argumentative. Beeks are MUCH easier to get along with.
Reefkeepers are spending upwards of $500 for a piece of equipment for a reef that he's going to put a $200 fish in that will die within a month, and tell you why it won't, and then after it does you never hear anything more. I break the rich kids rules. My fish live. But I stay out of their forums.