The Elves of Middle-earth stand out among all other races. With their superior strength, intelligence and everlasting lifespan, they could've ruled much of the land if they chose to. Instead, they decide to watch over Middle-earth from the safety of their forests. But they don't hide away from danger when it comes, as Elves play a prominent role throughout The Lord of the Rings. However, out of all the Elves and kingdoms featured in the story, no Elven children are featured in Tolkien's stories. Indeed, their arc in the Lord of the Rings trilogy is the exact opposite: they are leaving Middle-earth for the lands beyond the sea, bringing their story to an end instead of raising new children as a beginning.
Source：https://www.cbr.com/elf-children-explained-lord-of-the-rings/
