Scans_Daily

That's been Diana's view since Perez, which has always made her a difficult fit in the JLA. She'd have killed the Joker, years ago. Of course, that's a large part of why she doesn't have a very sizable Rogue's Gallery. :)

Bruce maintains the hope that the villains can one day be cured. And, there have been a few occasions where it's actually worked. But, with the Joker... The Joker not only knows who Batman is, but knows who the entire Bat Family are. This was established before Morrison made it explicit. Back when the Joker tried to kill Black Mask over Steph, he used her name rather than her costumed identites.