I'm sure we all do this, being the villains we're not SUPPOSED to feel sorry for them when they get their comeuppance but I think everybody knows a few that they can't help feeling bad when they get theirs. Spoilers ahead obviously.
One that definitely fits this category for me is Omar from Coffy...even though he's this violent, brutal murderer and all that, I still can't help but feel a little sorry for him when she stabs him in the neck with her bobbypin and he's bleeding and screaming for help from his partner who just leaves him to die so he can go chase down Coffy for switching their heroin with sugar. Though likewise, I also can't help but feel a little sorry for Omar's last victim, King George, not so much that he went out but the way he killed him.