“We should legislate what people do with their own bodies because I don’t like their decisions”

I mean, yes. That's the vast majority of people, regardless of political affiliation, or where you live. I don't think meth should be completely deregulated, for example. If someone goes to a hospital and asks a doctor to inject them with bleach to cure COVID, I don't think the doctor should do it.

That doesn't mean that I don't support bodily autonomy, however. Just not as an absolute right, because I don't consider any right as absolute. Rights have to be balanced against each other and considered in the context of their material consequences.

I don't see how this is comparable to something like abortion, where only a fetus is being terminated, not a human being. Nor is it comparable to, for example, trans rights, where a person is aiming to live a happy and fulfilling life. Just because crazies want to restrict bodily autonomy in cases where there's no valid reason to doesn't mean that cases with valid reasons don't exist, and discouraging suicide is one of them.