Bad endings that you're okay with or perfer?

Some Batman villains have potential for rehabilitation, people generally think some of them should be saved and I agree, but one intresting case is Harvey Dent. Ironicly opinions seem to be split about him. Some people think he should eventually recover with plastic surgery and intense therapy.

But a lot of Batman writers tend to think Harvey gets worse. Two-Face's has a tradition of getting more severely ill. Sometimes he completely turns evil. Other times he's so choice paralyzed that he can't function without the coin. And sometimes shit gets really freaky and he developes even more personalities. Like that guy from Split.

Personally I like bad end Harvey more. It has a pretty intresting horror element to it.