I'm sure this has been said, but don't have time to read the entire thread to check, but clearly the issue is all online gaming communities have the same problems. If you feel PSN is worse then I'm afraid you've just had more bad luck on PSN. I know friends who have been driven mad by Live but had relatively few problems on PSN and vice versa - and of course online on PC is just the same.
It would seem that, where online gaming is concerned, jerks, hackers, morons and offensive idiots abound. No wonder muting, banning, etc. came into existing as quickly as it did or online gaming would never have succeeded.
The only realy respite is playing with known friends, as started with LAN parties on PC then moved to the use of actual friend mechanisms on Live, PSN, etc.
Try to be reasonable... its easier than you think...
