OP, you've put a lot of things in together, but I get your slippery slope argument and honestly I don't think you're far off. I am pro-death in cases of abortion and euthanasia. And also, in so far as people need to come to terms with death - it's the one thing we all face, yet we don't have much cultural guidance to deal with it. As people age past their enjoyment of life with new medical treatments, we are going to have to face this issue.
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People are strange, when you're a stranger
Faces look ugly when you're alone.
Morrison/Krieger