Living wills, etc. It has to be authorized by you only. That I accept. Euthanesia is a slippery slope agreed but if it you authorizing it for yourself, personal choice is more important.
I am, oh, 63% in agreement with you here. But what disturbs me is how many people seem to think that they should be able to write down "I want to be killed if X Y Z happens to me" and, no matter what, that should be respected.
Even if X = blindness?
Y = amputation?
Z = half-facial paralysis from stroke?
There are certainly terminal, painful, suffering, horrible conditions in which I'd want to be mercifully helped as I shuffle off this mortal coil, just as much as the next guy. But why do people seem to be assuming, or speaking as if, there is some sort of universal right to suicide, no matter what, for any condition of your choosing?
There is not.
That is why I get a little nervous, and am slightly resistant, when people say stuff like "Euthanesia where you specifically have authorized a professional to end your life humanely" is always, no matter what, A-OK.
If that's what you think then you would be saying that you approve of the following situation: A teenager is depressed about a breakup, specifically authorizes a professional to end his life humanely, and so he does.
"authorizing it for yourself" is not and cannot be the only requirement here.