There is a legal concept, dumbshit, called Evolving Standards of Decency concerning capital punishment. With the word "decency" in the concept, no wonder you're unaware of it.
For you morons that are either too lazy to look it up or too stupid to understand it, I'll try to explain it in simple terms.
As it applies to the death penalty it comes down to the 8th Amendment. There were times where the mentally impaired or even juveniles were executed. Standards have evolved to the point where those are considered a violation of the 8th Amendment.
Now let's see how those standards have applied to executions versus life without parole.
If you do just a little research, there is only one scenario of life without parole violating the Cruel and Unusual Punishment clause of the 8th. And that applies to juveniles only. So, old Frank, despite his ad nauseam invocations of that punishment being inhumane, gets blown out of the water. Sucks, huh, Frankie?
Yet, there are multitudes of case law on the death penalty, the way it's carried out and whom it's carried out upon. I don't need to touch upon that, because that hasn't been my issue. My issue is not Cruel and Unusual Punishment, but that false convictions lead to innocent people being given the death penalty. The fact that there have been so many exonerations is proof of that. Those are well documented. One can read the stats from The Innocence Project. They're all there.
So sorry, you flaccid trio of fools. Your argument of inhumane treatment doesn't pass legal muster. Only your moronic personal notions. Reasonable people have noticed how worthless those are.