The longer I think about it the harder I find it justified to spend so many resources on making someone suffer for the horrible things they've done. Even if he was actually suffering and not fake suffering to try and get better entertainment I think its only asking for more trouble to keep around a far-right reactionary that's been stewing inside their own head for this long.

Edit: To followup this isn't to say that I'm in favor of the death penalty in general. I'm not, except in extreme circumstances like these where the evidence is so overwhelming that there is no possible question as to the guilt of the accused and the harm caused is abnormally large in scope and scale.