It wouldn't bring any benefit to anyone (except maybe private prison companies).
And also it's because he's still a person. A person who did a terrible thing while literally insane, but still a person.
And also it's because he's still a person. A person who did a terrible thing while literally insane, but still a person.
It feels good, but it's like letting a drunk driver get back behind the wheel after they show remorse. The chances that they get in another DWI (and hurt someone) is high.
It's also why we have sex offender registries. The recidivism is high.