You can do whatever you want to yourself. You can't hurt/encourage others, and the data may be no good, but certainly you have informed consent if you're the only subject
That's not actually true though is it, suicide is illegal in many jurisdictions. Not just self- euthanisation towards the end of life anyway (which is more controversial/media-discussed) but any form.
The context of that comment is a parent comment asking about medical self experimentation. You're also not allowed to administer scheduled substances to yourself in many jurisdictions and plenty of other things like that but that's not what I was replying to.
To give the authorities a reason to intervene. Which in turn is justified by most people who fail to commit suicide being happy, in retrospect, that they failed.
There's probably also a crowd who want it to be illegal because they view suicide as a sin, though personally I think that justification for a law seems like a violation of religious freedoms.
> Which in turn is justified by most people who fail to commit suicide being happy, in retrospect, that they failed.
If true, that sounds like survivorship bias (literally). Those who aren't happy about the failure will just try again and won't be counted in the statistics.
I'm pro-choice, but I think that it's not an unreasonable stance if you believe that the fetus is an alive human being with intrinsic worth, or a soul. (Souls aren't real, but
>75% of Americans believe in them.)
None of that is a refutation of what I said though, since I reject the notion that belief in the existence of the soul can be used as justification for stripping a person of their bodily autonomy.
If we found out cancer cells had souls tomorrow, exactly no one would be screaming “but their souls!” at folks walking into a cancer clinic.