You don't go to jail for murder

It may look to the jury like a hurried mistake made in a panic (implying self defense)

You help remove their bloodine from the gene pool

If they DO die, they'll have bled out through the dick, which is quite a humiliating and slow way to die, giving them plenty of time to think about what got them there

Change my mind

btw, disclaimer: please don't shoot people. I don't recommend anyone shoot anyone. There's other ways to negotiate reality. That being said, if you absolutley have to, shoot them right in the dick. This post is for entertainment purposes only