Here's a related essay of mine that you might find interesting: https://medium.com/original-philosophy/an-eye-for-an-eye-38c4c5616c95 subtitled "Does retributive justice benefit society and individuals, or does it harm both?" My thesis was the action should determine the punishment not the result of the action as many results we cannot control, especially death of another, as dates of death are soul-contracted. The example I used was drunk driving. In whatever manner society chooses to punish that very dangerous action should not depend on whether someone was killed.