User blog comment:Gifist8/The Flash Season 2 Review/@comment-27700324-20160821004934/@comment-27700324-20160822204925

But Batman wouldn't even let Jason do it. It's an endless cycle that only exists because DC wants to make more books that sell like the Killing Joke. I think the characters in Gotham would be more interesting if Batman murdered the Joker, then Harley, Gordon etc would be affected heavily by this event and it would bring more attention to the other villians he has.