First of all, I think it's important to remember where you came from.
Also, I think some managers, or leaders, take advantage of their position and try to rule over people, flex their authoritative muscles. The only priority they seem to have is satisfying their power trip. Good leaders look objectively at their people's skill sets, their strengths and weaknesses, and use them in the most efficient way possible. And they see the people under them as their team. Every one working together to help everyone else succeed, because that's the goal right? To get the most out of the people under you, so everyone is helping everyone succeed, so the business brings in maximum profits? I would think that would make a leader, or manager look good and he/she would benefit the most from it, right?
I'll just never understand bosses who don't see that it's in their best interest to be kind and fair...