If you are dead sure about the guilt and the crime merited the death penalty (Ted Bundy, etc), that is one thing. But we are finding convictions for murder and having the death penalty that were based on bad forensics (bite marks), falsified facts (jail house stories from other inmates) hiding evidence from the defense (other confessions, etc) and just bad defense lawyers.
Since the death penalty cannot be undone once carried out, it should be seldom used and only for the worst of the worst.
Yes, sloppy ‘justice’ is the problem with this.
Those caught doing such sloppy work, should be punished similar to the one falsely punished.