Why did the Elves leave near the ending of Lord of the Rings?

Yes, they were going the same place as Frodo; Valinor, also called the Undying Lands. Long ago, all Elves lived there, but some left to return to Middle Earth. They were exiled (for more specifics, read the Silmarillion) but were finally allowed to return after Sauron was defeated.

Actually, the movie is somewhat inaccurate because it shows Elves leaving Middle Earth before Sauron is defeated. This never happens in the book. Frodo does meet some Elves in the Shire before he leaves, but they merely say they are headed for the Grey Heavens, which is where Frodo leaves from.

The Elves didn't go to the place Frodo was ( Mordor is also part of Middle Earth). The fact that the Elves were leaving has nothing to do with the fact that Aragorn's love was having a difficult time choosing. This is why they left: After the War against Sauron, that takes place in LOTR, the dominion of people rises and Middle Earth is suffering a change, a change felt by the Elves.

The Elven Lords together with Mithrandir, have reached a high point of knowledge and understanding, thus resounding more with the energy of Valinor, the Undying Land and initially the source of Vital Energy when the World (Arda) was created.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.