system
Given the following post, respond as if you're commenting on Reddit:
human
[Batman] What would Gotham be like if Bruce Wayne dealt with his parent's death in an emotionally healthy way?

How would things be different for Gotham and the DC universe in general?
gpt
Probably not much different than the time Martha and Thomas Wayne were alive. Gotham is, well Gotham, because of Batman and his rouges gallery. Without Batman considering the following:

* Joker would not exist. Before becoming the Joker, he was a small time crook known as the Red Hood. One night fell into a chemical vat while trying to escape Batman. He survived but his hair became green, skin white, and lips bright red. This snapped his sanity and he became the Joker. No Batman means no accident and therefor no Joker.

* Harley Quinn: No Joker means no Harley Quinn, end of story.

* Penguin: He rose to power as the death of the Wayne's inadvertently triggered a power vacuum that was filled by organized crime. Oswald Chesterfield Cobblepot rode the wave of crime and eventally became the Don of Dons in Gotham. No Batman means he'd probably become a much smaller mobster but that's about it.

* Harvey Dent: May or may not have become Two-Face. He became Two-Face because batman caught the mobster that threw Acid in Dent's face. It possible the mobster would've never been caught, and Two-Face never comes to being. It's also possible that someone else catches the mobster, and similar events unfold. However, Bruce can turn his full attention and wealth into helping Dent, so he wouldn't be any distractions.

* Catwoman: Her cat theme was inspired by Batman. Selina is probably still a cat burglar but chances are she's nothing more than the occasional nuisance for GCPD.

As for the other big villains like Poison Ivy, Killer Croc, and Mister Freeze, their fates aren't tied together with Bruce's so they'll exist whether or not batman does. On the other hand, Bruce won't let his beloved city descend into chaos from these metahumans. Chances are he'll throw resources into outright destroying them. If they can't or aren't destroyed, they'll be captured by metahuman heroes, likely sponsored by Bruce, if not driven out of the city entirely.

Non-metahumans like Scarecrow, Riddler, and Mat Hatter, will be locked away in Arkham Asylum and Blackgate Prison. Batman knows the two is in effective but he can't give them resources as Bruce Wayne because it creates an obvious connection between the identities. But no Batman means no risk of identity exposure, so Arkham becomes significantly more secure through the help of the Wayne Trust fund. Escape still occur but vastly fewer and far between.