That reminds me, I've always sort of wondered, in a world where some people are immortal, wouldn't the people who aren't immortal be insanely jealous of other people's immortality to the point of obsessing over it and feeling immensely frustrated and everything? Like, why are humans in Lord of the Rings just okay with the fact that whereas they only get 70 some years, the Elves get to continue on forever and forever and forever?
Though I suppose it'd be like extreme wealth. I mean, would I like to have the same kind of wealth as an Elon Musk or a Jeff Bezos? Well, I mean, sure, but I'm also not like, actively jealous of them, I don't feel any instinctive resentment towards people who have an insane amount of money just on account of them having an insane amount of money. I suppose things would be the same way in a world in which there were immortals. Most people genuinely wouldn't feel bothered (or even think about it, really) by the fact that, I dunno, Emlithor Gaearion was alive already 3,700 years before you were born, and he's in all probability still going to be alive 3,700 years after your death.