We already make similar decisions for end of life, but without the option for a peaceful and painless end.

In the US at least someone can choose Do Not Resuscitate (DNR), which means medical services will not keep them alive when they are in a critical condition, but it also means they can’t make the process easier or faster. People who are brain dead or unresponsive have whole legal processes around letting the person die or be kept on life support.

So we already have those concrrns addressed, but without the option of a swift and painless death.