My main point is people who commit certain severe crimes (think about serial killers, raping children, mutilation, premeditated murders/arson/lying in wait, etc.; these people should remain behind bars for all eternity. That's just my opinion; I can't imagine going to the families victims and telling them "dont worry, they will be good in a couple of years, and will get to live their lives thanks to our tax dollars, while your son/daughter rots in a grave".
There's no justice, no humanity in that.
And in my mind, reconciliation is always better than revenge. I should think any family should be happier to know that the killer lived to deeply regret their crimes and become a better person than to think that somewhere out there is someone locked in a cage wallowing in resentment and still thinks what they did was right.