In some corners of the Wizarding World we have a just system in place, a logical little scheme of deterrence and basic economics. Acts too heinous for words (Darkest magic, unlicensed curse invention, simply escaping from prison) earn one the Kiss; everyone knows that. And the assumption is that this is why everyone is not flinging Unforgivables at each other, not running about devising ways to curdle the innards; this is how wizards and witches know to stay in their cool little prisons, their fixed places, under the watchful eye of their Ministries and Cabinets and Regulatory Agencies. For the threat of the Kiss is a blissful ethical straitjacket, pinning one to morality and to righteousness.
And for those that do not heed our warning? Those that earn themselves the Dementors’ Kiss? Fear not. Do not listen to those radical malcontents who rail against the Kiss, those provocateurs and revisionists seeking only to erode our time-honored methods of punishment.
For you see, we are still kind to the ones we have Kissed. We do not dispose of the blank-eyed body as though it were so much rubbish, we do not ship the empty carcass back to its grieving family, and we do not allow victims to carve out retribution on the soulless skin.
In some corners of the Wizarding World, we do nothing of the sort. We transform these pathetic degenerates into something they never were while they had a soul. We make them useful. Valuable. Decent contributors to society. For how else do you think we have tested the Boil-Cure potion, the Antidote to Uncommon Poisons, the Wolfsbane?
It is a grand system we have in place.