I think I understand where you’re coming from but I have to say I think you’re totally wrong and dangerously so.
First things first, we’re talking about human life and death and thus should treat things carefully because the results are, well deadly and irreversible.
Now, to get right to the point, natural selection is about masses and populations >>naturally<< surviving those who did not adapt as well. It’s not about what causes death, but what enables the continual existence of life and that distinction is vital.
Lastly, for my opinion portion, we as human beings are cognizant of ourselves and of the universe. We are not birds on an island and thus it’s in our nature to be cognizant and to make choices through our consciousness. That’s our natural selection right there.
Letting someone who is ill harm themselves, instead of helping them live comfortably while we figure out how to “correct or adapt” them to live comfortably is unnatural for us as humans. Many animals and other living creatures seemingly show signs of empathy and team work.
Sounds to me like your environment might be naturally selecting an unnatural outlook for your life if you’re really cool with letting mentally sick or disordered people hurt themselves.
We’re a species that thrives off cooperation and team work, don’t forget that friend! Idk if you’ve had family in your life with mental illness but I know it can burn. You. Out. But you gotta remember that we’re complex and amazing creatures that this planet hasn’t ever fuckin seen yet (probably) were capable of beautiful and powerful things if we keep our heads on straight and our engines cooled
