system
Given the following post, respond as if you're commenting on Reddit:
human
[Tolkien] Are the Elves jealous of Man having the "gift" of mortality?
gpt
Some certainly are by the time of the Lord of the Rings, and it's implied that all will eventually succumb to that envy. There is only so much that can be experienced, so many joys and so much pain, before you've done everything there is to do. Then what? 

Elves don't have a choice, they are stuck being immortal beings reborn and renewed, until the end of time. They have no escape, no quiet respite at the end of a long road. They're just stuck in a cosmic version if groundhog day, unable to ever move on.