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
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.
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.
/s
The laws that do target someone for being in an altered mental state are mostly about being that way in public.
No you can't. Maybe in your country.
For ex, it's suicide is illegal where I live. Yeah.
Uh, women would like a word.
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.
Well, that's a you problem. The rest of us make decisions based on what we believe, not on what you believe.
I would hope most people have enough self awareness to not compare a foreign hostile disease that does nothing but kill its host to a human life.