Two things I took away from this movie
First let me establish that I'm not pro-death penalty and I would be fine with no death penalty and life without parole.
1) I've had surgery before and the anesthetic puts you to sleep instantly and painlessly. Why are they trying to portray a lethal injection death as some kind of agony? Doesn't the death occur after the person is unconscious and unaware? Mental anguish prior to the execution I can see, but not physical pain or suffering.
2) The only time the killer seemed to show any emotion was at the end when he was feeling self-pity at facing the consequences of his choices. This seems to be the case with many criminals. They only feel sorry for themselves and have no empathy for others.
Millions of people are raised by terrible parents or put into foster care, live in poverty and suffer violence, and don't commit crimes to hurt others. Everything always comes down to a choice. No one is forced to hurt others. It's always a choice. Choices always come with consequences.