Have you never met a bully? Did they play nice when you did? Not everyone is inherently as reasonable and "nice" as you think yourself to be. This may be hard to grasp if you've spent your entire life in exclusively civil company, but there are plenty of people with malicious intent in the world. And is it any surprise that they would be drawn to a profession wielding physical dominion over the common citizen?
Have you never met a bully? Did they play nice when you did? Not everyone is inherently as reasonable and "nice" as you think yourself to be. This may be hard to grasp if you've spent your entire life in exclusively civil company, but there are plenty of people with malicious intent in the world. And is it any surprise that they would be drawn to a profession wielding physical dominion over the common citizen?