Frodo left Middle-earth due to lasting injuries from his journey, seeking healing in the Undying Lands. His decision was influenced by trauma and a desire for peace, similar to Tolkien's own experiences. In Rings of Power, Frodo is portrayed as a hero who found solace and closure in the Undying Lands.

Frodo went to the Undying Lands at the end of the Lord of the Rings trilogy, but many wonder why Frodo left Middle-earth instead of settling down in the Shire like Sam. The reasons for the Elves inviting him are clear given his destruction of the One Ring and Sauron, but Frodo's reasons for accepting are less so. While he makes the return to the Shire with the other hobbits, Frodo doesn't stay long and bids a bittersweet farewell to Sam and the others. Ultimately, it was the injuries that the ring-bearer Frodo endured on his journey that pushed him to leave Middle-earth.