@Jennifer and @SilkRoad: I'd recommend stepping away from this and letting it be. LS can't bait people if there's no one to bait.
I haven't read the whole thread yet but I'll edit this post with a response to the actual topic, once I've gotten through it.
I agree with the OP about certain types of insults, but not all. From my experience, unless you're in a REALLY fucked-up community, people don't use the sorts of insults that make you internalize your worthlessness, as a way to bring community members together. But I do agree with @fia that your insults can project your own insecurities onto others. A mother could have an eating disorder, insult her daughter's normal figure by calling her ugly/fat/etc, and give her daughter all of her issues that way. Same with unhealthy friendships/relationships. But I can't think of any instances of the OP with healthy communities or healthy relationships -- unless the insults are so casual that they are made meaningless. No matter how much my foul-mouthed friends say "fuck you" to me, I'm never going to think they actually dislike me, because I know them, I know their slang, I know how to read their intentions.
Reading @Victor's later posts, I'm wondering if he's trying to imply that all "tribes" are based around insults? I'm not really seeing that, but I'm curious as to how that would work... and how a tribe NOT based on insults would work.