Many, probably most, who consider suicide are not well. They may be in good physical health but poor mental health. When we have a physical ailment we (the pati

Many, probably most, who consider suicide are not well. They may be in good physical health but poor mental health. When we have a physical ailment we (the patient) can generally understand the path to recovery, hence we don't kill ourselves when we break an arm. With mental health not only is it difficult to understand when you are in good mental condition but it is almost impossible to see the path to recovery when you are sick. In other words wanting to end your life may be a symptom of a short term illness (say someone with depression who will be better in a few months). Differentiating between people who are of completely sound mind and want to end their life and people who are suffering need treatment is not going to be full proof so it couldn't be offered in the same way as euthanasia (similar to how most countries don't practice the death penalty - it's nearly impossible to be 100% sure of something and you need to be when it comes to doing something as permanent as ending a life).