Many band breakups have been justified and, as in any other 'work' situation, bands may ultimately run their course and a split is inevitable.
Another line of reasoning, however, often causes the unfortunate band breakup.
Weigh in as to which was more ridiculous, needless and (perhaps) dumb:
The Pink Floyd feud between David Gilmour and Roger Waters OR the decimation of Deep Purple due to the bitterness (hatred?) between Ian Gillan and Ritchie Blackmore?
Now, if I have this slightly off, or you see it another way, that's what this discussion is for. Was it actually Roger Waters vs. the entire band ("my way" or "no way)? Are there as many people who feel as bad about DP's demise? Probably not, and since there are thousands of fans that would *still* like to see the *real* Pink Floyd play, that might feel like the more idiotic, and frustrating feud. Fans love Ritchie Blackmore, but are they (and you ...) disappointed in him at the same time?