If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
in general usage, we tend to use selfish to mean "privileging oneself over others to an inappropriate degree,"
This definition turns on the word "inappropriate" which is a weasel word and can mean everything (and nothing) under the sun. How can one be so selfish as to order a Starbucks latte when there are hungry children in Mozambique?
"I need you to definitely stay dead forever so I can stop worrying about it,"
Doesn't look nice, but then most things dialed to 11 don't look nice.
Let's look at analogous realistic examples. Let's say there is a couple, one spouse gets into a car accident and becomes a vegetable. He's alive and can be kept alive (on respirators, etc.) for a long time, but his mind is either no longer there or walled off. What do you think is the properly ethical, appropriately non-selfish behavior for the other spouse?
Doesn't look nice, but then most things dialed to 11 don't look nice.
Let's look at analogous realistic examples.
The example I gave is not just a realistic, but a real example, if as posited upthread, people are resisting having their loved ones pursue cryonics because it denies them a sense of closure.
What does or does not qualify as an inappropriate level of self-privilege is of course subject to debate, but when framed in those terms I think such a position would be widely agreed to be beyond it.