1) Makes you and I judges of who should live and who should die.
2) It bolsters a culture of vengeance and death.
3) And what if five years later (as sometimes happens) new evidence shows up that someone else was the guilty party? Too late - can't fix it.
4) "Punishment" is a useless exercise. It doesn't solve anything, it doesn't fix anything and it absolutely heals nothing or no one. Vengeance is clearly not a healer. Only forgiveness heals.
Does that mean the guy should go free? As long as he remains dangerous, no - it is government's job to protect society from threats to life & liberty from both outside or within the country.
Dare I put out the Shakespearean quote? It's worth repeating here I think:
The quality of mercy is not strained;
It droppeth as the gentle rain from heaven
Upon the place beneath. It is twice blest;
It blesseth him that gives and him that takes:
'T is mightiest in the mightiest; it becomes
The throned monarch better than his crown:
His sceptre shows the force of temporal power,
The attribute to awe and majesty,
Wherein doth sit the dread and fear of kings;
But mercy is above this sceptred sway;
It is enthronèd in the hearts of kings,
It is an attribute to God himself;
And earthly power doth then show likest God's
When mercy seasons justice. Therefore, Jew,
Though justice be thy plea, consider this,
That, in the course of justice, none of us
Should see salvation: we do pray for mercy;
And that same prayer doth teach us all to render
The deeds of mercy. I have spoke thus much
To mitigate the justice of thy plea;
Which if thou follow, this strict court of Venice
Must needs give sentence 'gainst the merchant there.
The Merchant of Venice, Act IV, Scene I [The quality of mercy is not strained] by William Shakespeare
Aggravated Murder, Felonious Sexual Penetration,
Rape on a three year old....he was 19 years old at the time.
He has forfeited his right to continue.