I'm a professional Most of the time

What drives a man to be a killer? Lots of things. This particular man witnessed the death of a street cat at the hands of some teens who thought it was fun. Fun to torment, maim, kill. The man tried it on the teens. He found he didn't like the first two, but he loved the killing. So he kept at it, made a job of it, and when the world fell sideways he kept at it.