Is that I am completely opposed to murder.
If it is ok to justify murder in any case, where is the boundary? What is worthy of death and what isn't?
Why is the defendant's crime considered illegal murder yet the punishment is not?

On both spiritual and practical levels, I do not think it is ok for any human being to decide that another human being is worthy of death. Why do we punish people for murder in the first place? Because it is a disgusting act.

And I think people who murder should be in prison for life with no chance for parole. That's a long time to stew about your bad choices.