>>>instead of eliminating it totally, reserve the death penalty for the ones where they've confessed or it's absolutely irrefutable evidence. btk serial killer comes to mind. what's wrong with using it
>>under those circumstances??
>>
>>Confession is not proof, is evidence, and not absolutely irrefutable by itself alone.
>
>Well then not confession alone. Confession + irrefutable evidence. BTK serial killer for example. Osama Bin Ladin for another. How about those?

I do not about BTK, but afaik OBL was never put on trial so there was neither confession nor irrefutable evidence accepted by a judge, I am not even sure if he was even charged by the Justice maybe you can shed some light on this for as I said, I do not really know but I do not remember ever reading about a trial or formal charges.