They make it to these positions by being scared and inexperienced right-seaters (LIKE MOST OF US) and got their butts handed to them by jerk captains who were even worse. This is back in the era when the captain really was God, and if you had a problem with that you could get out and walk. This in turn makes them forget where they came from, and they turn into the jerk captains they flew with, albeit a slightly diluted form.
Case in point, I flew with a guy in the 72 a couple years ago. He told us all through ground school that if we ever saw a problem with what he was doing or felt something was unsafe, he wanted us and even insisted that we call him on it. One day into BNA he was about to land on the wrong runway, and therefore land on an AA 757, and I called him on it (had a great view of things from the side saddle). On the leg out of BNA he called for a checklist and I didn't hear it due to the noise of the cockpit and the radio chatter in my ear. He then proceeded to tear me a new one, while sitting in line for departure, in front of the whole flight deck crew plus a check engineer plus a mechanic. After we parked it at CVG for the night, he did it again after I tried to apologize, only this time he did it in front of the four FAs. He even looked me in the eye and said he could guarantee that I'd go nowhere in this industry, implying that he'd have his buddy the chief pilot fire me. I guarantee it was in retaliation for me making him look bad on that approach into BNA, the check engineer (who was also a left-seat captain) agreed with me.
That was one helluva 2nd flight ever in the 727, I damn near hung up my wings for good after that flight. But, poetic justice works in mysterious ways because 3 weeks later he got furloughed and I didn't.
I made a promise to myself that when I get that 4th stripe on my shoulder some day, I would NEVER be the kind of captain that he was. I hope everyone else on this board makes that same promise to themselves.