I can argue the fourth position without holding it myself.
As it's late, I'll shortcut by saying have a read of this:
https://en.wikipedia.org/wiki/Death_anxiety_(psychology)
Just the intro will do:
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Death anxiety is anxiety which is caused by thoughts of death. One source defines death anxiety as a "feeling of dread, apprehension or solicitude (anxiety) when one thinks of the process of dying, or ceasing to 'be'". It is also referred to as thanatophobia (fear of death), and is distinguished from necrophobia, which is a specific fear of dead or dying persons and/or things (i.e. others who are dead or dying, not one's own death or dying).
Additionally, there is anxiety caused by death-related thought-content, which might be classified within a clinical setting by a psychiatrist as morbid and/or abnormal, which for classification pre-necessitates a degree of anxiety which is persistent and interferes with everyday functioning. Lower ego integrity, more physical problems, and more psychological problems are predictive of higher levels of death anxiety in elderly people because of how close to death they are.
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Then imagine somebody with such fears/phobias agreeing to have their organs removed while they're still alive.
Then imagine somebody with such fears/phobias being offered the opportunity of being kept alive by organ donation.