Originally Posted by casual observer

I've been at Delta 17 years. I've flown with a few a-holes. If the captain isn't safe, the answer shouldn't be to put him / her on your no fly list so someone else has to fly with him / her. The answer is to address it through the CP or professional standards.

If the captain is just an a-hole*, I think of it as first officer responsibility to deal with it or upgrade.

*full disclosure - I'm an a-hole.