If you think stealing a van and hitting someone warrants death, you are an unhinged individual (or more likely, an internet tough guy).
Then I stand before you an unhinged individual. There is no rehabilitation for most people like this and it costs a lot of time and money to try.
This planet's habitable surface is overflowing with humans and yet most of us manage to avoid committing violent crime. Why should we roll over and take it from those people who repeatedly demonstrate their desire to hurt others?
Well.... that escalated quickly!