Yes, jeni, we should all try.
Sometimes I look at an OP and think, Oh No, I can guess how this is going to end up. Might I suggest that if somebody starts a thread that is obviously going to be downhill all the way, we ignore it and let it die? Some threads start off OK and then somebody wades in with murderous intent. We need to resist the urge to bite back. Hard but it's the only way to end all the aggro which is so destructive.
I don't mean all threads should be tame. That would be really boring but nastiness should not be fed by more nastiness.