Why do people like things that I don't?

When I woke up this morning I decided that in order to be different, I will become a murderer. Sure, there are a lot of other murderers out there, but they are all posers compared to me.
If you don’t understand my motivations you are a closed-minded
ass. You have NO RIGHT to question me, or try to understand. Maybe it is a phase I will grow out of, you say? NO WAY! I am hardcore.

What should I wear? How do all the other murderers dress?
And what is murderer lingo?