system
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human
[Batman] Why do most of Batman's Rogues go to Arkham in modern interpretations?

Ever since it debuted in the 80s Arkham Asylum is probably at this point the most famous Prison/Mental institution in all of fiction. Despite its sub-professional standards and inability to keep its inmates and patients from routinely escaping, once Batman captures a high profile villain he usually returns them to their room in Arkham. 

Which Ok, fair enough, but is there a good reason in modern comics and media that alot of these villains even BELONG In place like Arkham Asylum when places like Blackgate Pentitentiary exist? Sure most of Batman's villains are costumed themes but most of them are sane. Just eccentric. 

Joker? Sure. 

Two Face? Sure. Split personalities and such. 

Mad Hatter? Of course. Wonderland delusions and all. But outside people like them and a few others I feel like a vast majority of Batman's criminals aren't at the point where they would be sent to an Asylum over legit prison. 

Killer Croc, Riddler, Penguin, Mr. Freeze, Black Mask, Poison Ivy, Bane, Clayface, ETC don't belong in a hospital for the criminally insane. They belong in a place like Belle Reeve or Iron Heights. 

Interpretations vary but usually they aren't insane criminals in the same way someone like Victor Zsasz is(Although i can see why some people say Clayface is insane). They have a firm grasp on reality execute their crimes with a purpose that isn't the result of some mental illness like Two-Face. 

Riddler is just extremely narcissistic and at times OCD. But that would not land him in a mental hospital. Mr. Freeze literally does crimes to get money for his wife's condition. Bad decisions? Sure. But he's not crazy at all. Penguin is a sophisticated and exceedingly intelligent mobster in most incarnations. Killer Croc in most interpretations is a guy who *turned* to crime because he was a social outcast his whole life.  

Most of the time he's hired muscle and most of his stories revolve around him trying to get money and being a thug. Again, he's guy in pretty shit circumstances but he's not a insane with no understanding of how his actions hurt people.

I get that Arkham is popular and cool, but most of them don't belong there. I think one of the few adaptions that try to justify this best was the Arkham Games. In those games the Blackgate prison was destroyed so alot of the villains that weren't even insane ended up there.  

Also Arkham and that game doubles as a mental hospital AND super prison for metahumans.
gpt
See, there's the thing, most of Batman's rogues *don't* go to Arkham. Riddler, Two face, Bane, Black Mask, Penguin, and Mr. Freeze Generally go to Blackgate.  Croc only goes to Arkham because Blackgate can't hold him. 

Ivy Goes to Arkham for much the same reason Croc does, but it's arguable that she's legitimately insane. A court would at least find her to be heavily deluded.

 Clayface's mind is altered by the Process that turned him into clayface in the first place. He's easily declared unfit to stand trial. 

Joker and Harley go to Arkham for Obvious reasons.

Most of Batman's villains *do* go to normal correctional facilities, extenuating circumstances aside. Belle Reve isn't someplace Batman likes to send people though, on account of Amanda Waller recruiting most  members of Task force X from the inmates there.