Barbaric forms of punishment are required for crimes which are of barbaric nature. Simple jail terms, with access to 5-star food and video-game consoles will only encourage these sort of crimes. These people should be made to suffer.
Jail: A five-star retreat in the mind of bryant.coleman. Way to stay grounded in reality.
Really, stoning and burning to death is barbaric in the eyes of the audience. These are intended to make the audience fear.
That's true, but there are some things we generally accept as universal. Even though we have the death penalty, the penalty is agreed to be death, not intentional agony. That's why death penalties that inflict pain aren't tolerated.
Also, every major religion uses the threat of eternal punishment in hell to scare people into behaving. Fear has never worked, whether it was temporary pain or when it was accepted to be eternal torment.