Which of Batman's regular villains do you think he actually hates?
I was thinking about how many of Batman's regular villains he often tries to get mental help for them, like Harvey Dent, Mr. Freeze, or Poison Ivy, or Catwoman with whom he has a romantic relationship, or the Riddler and the Penguin who he almost seems to look out for as if they were eccentric uncles, and it led me to wonder if he actually hates any of them.
I don't think he even hates the Joker, mainly because I don't think he sees the joker so much as a person as he sees him as a phenomenon in human form.
With Bane, I think he approaches him as an Olympic challenge. In any of their altercations since Knightfall it seems like he just sees Bane as a competitor, as far as battle skills go.
I do think he hates Ra's Al Ghul.
He might be the only one that he HATES! The Scarecrow would probably be on the list, too.