The most recent Batman comic collection had a really interesting story.
In the current continuity Batman and Catwoman are about to be married. Booster Gold (a time traveling superhero who is often kind of a screw up) is inspired by what happened to Superman in the famous story “For the Man Who Has Everything” to, as a wedding gift, go back in time and save Bruce Wayne’s parents. His idea is to show him that reality would actually be pretty awful so he would appreciate his current reality. Yes, that is a dumb idea but he is Booster Gold and doesn’t often think things through.
So we get to see what the world is like without a Batman, or at least without Bruce Wayne as Batman and it is just as bad as you would expect it to be. If you enjoy Batman stories I would suggest checking it out.