Have you ever tried going on a diet before? Every succumbed to the temptation to eat? Every had that “this is the last piece” mentality, when it really was “this is the last piece before the last piece”?
After one full meal, you realise how much you’ve eaten, and vow to go on a diet (and which seems to easy, since you are already bloated), only to to realise later on that dieting wasn’t as easy as you thought? And even though you know a diet is good for you (and perhaps your spouse or potential mate), you still cannot put in the discipline to go all out on it?
Ever thought if that was how a murderer felt? That even though he knew it was bad (to kill someone), he might just couldn’t have helped it? Your “last piece” that wasn’t, was his “last stabbing” that wasn’t.
Can a person be put to death because of one moment of uncontrollable folly? That very same folly that makes you go “one last piece” when it isn’t?