Question Author
So how do we judge the "sound mind" criteria? Please I'm only debating the issue, you seem to be taking it personally that I have not dived straight in and agreed with you.
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Not at all, it's just that you're using a completely different set of criteria for the (highly unlikely) scenario's you've described.
After all, in countries that allow assisted suicide in such circumstances, they don't yet appear to have reached the epidemic proportions you've forecast, whereby those of a certain age are euthenased for no other reason than old age.