From Dorian Grey to Lestat to Doctor Who to Wolverine, fictional characters have always illustrated why immortality is a bad idea.
I’m pretty sure this is the phenomenon know as “Sour Grapes”; if humans were naturally unaging, most of our media would loudly proclaim the advantages of living forever (or simply take it for granted), instead of saying “Cheer up! Immortality’s a mug’s game anyway!”.
