To me, reason number 4 is the most important reason I see in modern America. I think if we are a society that believes in execution, we should acknowledge that violence is violent. We should be forced to watch it happen.

For what it's worth, I also oppose the death penalty. I also believe that a life sentence without parole is also a death penalty. What life are we offering to life sentencees without parole? A lifetime tax burden on their state in exchange for what? Our goal should be reformation instead of exploitation.