That is YOUR definition of justice. MY definition of justice is seeing that the perpetrator of a crime pays a penalty that is equivalent to the crime they committed.
Again, you are using YOUR definition. I reject your working definition of the term "revenge". Why not use the definition that is found at Merriam Webster's website? If you wish to define the term ourselves, then I'll go with "an act of retribution intended to inflict pain or damage". Notice that, unlike your definition, mine does not invoke emotion, impugn the mental capacity of the person (or group) exacting the revenge, or address the "amount" of punishment. Going by your definition, how would someone seek revenge for the intentional murder of a family member? I mean, how could I possibly "inflict punishment far in excess" of murder? When you say "unthinking", you imply that revenge is always an act committed in the heat of the moment. When the state excutes a serial killer, it is most definitely a thinking response. It takes place (in the vast majority of cases) decades after the act.
That is what YOU are calling for. I'm calling for as brutal existence as possible for these scumbags. I couldn't possibly care less about the quality of their lives, nor do I care to have the state put even one penny into trying to rehabilitate them. For me, they relinquished all claims to having "rights" when they chose to abuse children. To hell with them, and to hell with their souls.
Well, to be honest, I haven't called for the anal rape of these people, but if that happens, then so be it. I truly don't care if they live beyond the first 24 hours in prison, nor do I care how they die. I don't care what their living conditions are, and I don't care if their cellmates are twisted, demented killers.