OK, but what about you and I? At what point have we "forfeited" our right to continue? Jesus said, "He that is without sin among you, let him first cast a stone..." (John 8:7). "For whosoever shall keep the whole law, and yet offend in one point, he is guilty of all" (James 2:10). In God's eyes, you and I are lawbreakers and are just as guilty as this guy. God does not categorize sin. In God's eyes, all sin is heinous and deserving of death, therefore, we've all "forfeited our right to continue."
What makes the death penalty unrighteous and unjust is all of these acts (whether WE judge them small or heinous) have already been judged on the body of Jesus Christ 2000 years ago. Our punishing him again is unrighteous and unjust because the same act is now being judged twice.
And I would absolutely kill MYSELF before doing a thing like that. If my hand offends me, cut it off. Don't reply anymore, I won't respond.
You argue that there is a biblical support for your position, yet I too can quote scripture,
Whoever sheds man’s blood, by man his blood shall be shed. Gen. 9:6.
And will you profane Me among My people...killing people who should not die, and keeping people alive who should not live...?” Ezek. 13:19
As I said previously, it is not about prevention, but punishment meted out by society to advance the liberty of all.
We can agree to disagree, and I believe you are wrong. There are persons who by the heinous nature of their crimes have forfeited their rights. Most importantly their right to life, since they thought it acceptable to deprive another of their right to life. We as adults view the sexual abuse of children to be a heinous crime against those who have not the ability to defend themselves from such.
You sexually assault a 3 year old, and then bludgeon her to death indicates that there was an understanding that the first act was wrong and criminal and that the second act of murder was the acknowledgement in an attempt to hide that crime or make the witness against him unavailable to secure your continued freedom without having to face your fellow citizens for your actions.
I am willing to risk wrongful execution(s) for the innocent to claim some level of justice for the victim, and to help secure the liberty of all.