One could ask show me a sane person? What's normal?
We are all human, there's is no one case that describes any of us!
A very good point. I have flown with F/O's who can't sit still for a second and are always aggressive, I have flown with F/O's who were very good at what they did but one dodgy message on a mobile has put here mind in a completely different orbit from where they were on the last sector. I have flown with Captains who were psychopathic bullies and walked a very fine line between what was right and what wasn't. I have flown with Captains who always wanted to push the envelope and were just waiting to see where your boundaries were. I have also flown with Captains that many other F/O's detested flying with and I have enjoyed the day at work. There is no "who would you rather fly with" question. Your job is to keep the other bloke on the rails in terms of SOPs. If someone starts to demonstrate behaviors that are not compatible with a modern flight deck sort it out or get off at the next landing.