Committing suicide is a crime in the US not so that we can punish the depressed, but because, if it weren’t, it would be illegal for the police to enter a home to save someone they suspected was about to kill themselves.
There has to be reasonable belief that a crime is currently being committed or is about to be committed for the police to enter private property.
So here’s the thing, as far as I can discern this isn’t actually true. I am unable to find any sources that definitively state that suicide is still legally considered a crime in the United States with the exception of assisted suicide. In fact basically everything I can find says that suicide is, at most a ‘common law crime’ which bars the family of the person who committed suicide from suing for damages unless they can prove that the suicide was the result of the person being ‘of unsound mind’.
Also it completely ignores the rather important fact that laws against suicide have historically been on a state by state basis rather than on a nation wide one. The majority of criminal law is local and thus blanket statements of what is or isn’t against the law in the United States are not a particularly good idea unless you are referencing federal law.
Additionally, as a mentally ill and neuro-divergent person can I just say that even if this were factual, it is an incredibly terrifying thing to contemplate. The police are NOT in ANY way people who should be involved in saving the life of a suicidal person. As things are, our society tends to automatically consider any suicidal person to be de facto mentally ill and there are far too many instances of the police causing harm to mentally ill people (and neuro-divergent people). So the idea that it would be a good thing for suicide to be a crime in order to grant them the ability to intervene scares the hell out of me.