The problem is that mental illness affects your ability to think. Most of the time, someone contemplating suicide is not making a rational choice about their fu

The problem is that mental illness affects your ability to think. Most of the time, someone contemplating suicide is not making a rational choice about their future - mental illness often impairs the ability to make well thought out decisions. So sure, someone could hypothetically make the rational choice for euthanasia, but that isn't what is going on most of the time people are suicidal. I don't know what I believe about euthanasia, but I am in no way comfortable with okaying people to independently make that decision without a second opinion.