The worst line in any movie

One of my biggest pet peeves that shows up in movies regularly is when they have finally grabbed the evil villain and someone is about to send this piece of garbage to meet his/her maker, "Don't... if you kill him then you are no better than him." Or some variation of this. What a bunch of crap! I love Batman but it blows that he won't kill the bad guy when he gets his bat-claws on him. If you have a guy/girl that is running around destroying peoples lives through monstrous behavior - killing, raping, etc. and someone has the guts enough to blast that scoundrel, it does in NO WAY make them equals. The moral equivalence argument makes me want to throw up.  Want some advice Batman? Next time you get the Joker in your mitts... snuff him out! Not only will you serve some amount of justice to those he has already wronged, but you will save lives in the future. This act will not make you a villain, you will be the hero, and an even better one!