Road rage and horribly antisocial driving behaviour exists. I don't think it usually includes murderous intent, but intentionally dangerous behaviour is quite common.
Yes, they exist, they're illegal, and the legal consequences don't actually stop them.
If the argument is that everyone would road rage and drive dangerously if there weren't legal consequences, I dispute that. Many people don't do it simply because they don't feel like doing it.
Maybe not everyone. But probably sizable proportion of road users would. And I think that is the point. Punishment is effective tool for stopping at least sizable fraction of them.
If the argument is that everyone would road rage and drive dangerously if there weren't legal consequences, I dispute that. Many people don't do it simply because they don't feel like doing it.