A comfortable life without freedom is no life at all. What you basically stated was an argument in favor of slavery, as long as the slave has a comfortable life.
And slavery ... we call it spending time at her majesty's pleasure, is a form of punishment, but it isn't a death sentence.
Also, the death penalty doesn't really have anything to do with Christianity. Christianity doesn't celebrate the death of Christ itself, it's viewed as a necessary mechanism for freeing the rest of humanity from original sin. It's not supportive of the death penalty, as far as I know. Perhaps you should point out some relevant scripture to show why you think it does support the death penalty.
Well, first I would point to the day Jesus is crucified. It is a celebration called 'Good Friday'. Now that sounds like a pretty ringing endorsement to me. It isn't called 'bad friday' or 'inadmissible under all circumstances friday'.
Also God speaks of 'an eye for an eye'. So if you murder someone, you get the death penalty.
God is also omnipotent. He must know his son will get crucified, and yet He makes no effort in the old testament to get people to stop doing it. God sees the death penalty as a necessary evil.
In fact God demands the death penalty regularly.
The Old Testament law commanded the death penalty for various acts: murder (Exodus 21:12), kidnapping (Exodus 21:16), bestiality (Exodus 22:19), adultery (Leviticus 20:10), homosexuality (Leviticus 20:13), being a false prophet (Deuteronomy 13:5), prostitution and rape (Deuteronomy 22:24), and several other crimes.
I don't think the Pope can really talk to God, because if he had asked Him, God would have told the Pope to wind his neck in.