Revenge has to be the only point, considering that it is genuinely cheaper to imprison people for life than it is to go through death row appeals and execute them, even before you include the cost of botching executions and the lawsuits that stem from that. South Carolina choosing firing squad in this case was not only because its harder to botch, but because its virtually impossible to buy the drugs for lethal injection anymore. Even when available, they cost a fortune for the state to procure

The death penalty is just to sate barbaric revenge instincts and nothing else. There is no logical point to it