Once again, my original point was not that people should be left to die, but rather that it doesn't seem horrifically immoral, as the parent was suggesting, to believe that people should have to face the consequences of choices they knowingly make, especially where there are real costs to real people to mitigating those consequences.
I also just think it's important to acknowledge that we're explicitly not trusting people and instead deciding what is best for them, as opposed to a situation like extreme sports, where we allow people to risk their lives. I think it's a fine position to take, but I think it's slightly hypocritical to allow extreme sports, but not allow people to make their own healthcare decisions (though once again, a perfectly valid position as a matter of policy).
In my prior post, I wasn't trying to suggest that we should willy-nilly leave people to die, just that we don't live in a world of infinite resources and that I don't personally believe it's horribly immoral to let people make choices even when those choices can have terrible consequences, assuming they know the risks.