Honestly, it's hard NOT to envy the Elves
Imagine living next door to a group of people that don't age and can apparently live forever without having to worry about disease, mental impairment, or even getting fat. Whenever these guys do die, they're just factory reset and have the option to come back to life and hang out in paradise. Then when you ask if you can get some of that immortality, you're told a bunch of vague gibberish about it being a curse and that you're the lucky one.
Add onto that that at least one human did become immortal at some point through random chance because he got invited to sail West.
I've been thinking about it a lot recently. I know the moral lesson of Numenor is to not let pride and envy become your master, but the Elves just seem like they got a better deal overall than most humans. It's not even just immortality, they're more in-tune with nature and can manipulate natural forces without having to destroy them like we do.