In order to accept the argument Mr. Picard sets out, I need to see clear evidence that everything possible is being done in medical research etc. to identify causes and treatments to alleviate the pain of those who suffer from mental health problems.   I admit that I start from a position of skepticism given what I see currently.

There are some powerful vested interests in the status quo of medical research and medical treatments that vary in their influence (to a degree) globally.   At the root, the main driver of these interests is to maximize financial gain.

Once we allow our society to go down a path where assisted suicide is possible (or even endorsed) for illness that could be alleviated substantially using treatments that are much less profitable than the current treatments espoused within the medical community, we have gone to a very dark place where people's lives are only as valuable as their genes and environment allow, and terminating lives becomes grist for profit.