Well, part of it is true, i mean: if the ring wasn't destroyed and Sauron would have found it, he would have ruled middle earth, and would have destroyed everything good, also Arwen... but yeah, in the movies that was irritating, because she didn't have to be sick and half dying when Sauron didn't had the ring.I still think although Liv is a very gorgeous girl, Arwen was made weaker than she was. Especially in the thirth movie. It was like Arwen was made with the same material as the ring, but her faith had nothing to do with the ring. Her faith had to do with Aragorn. She was elvish and she was immortal, so how could she been dying? If the ring was not destroyed, she would have died. That is not true. That part disturbs me the most.
She is so much stronger in the books.
If she wouldn't have returned to Valinor Yep, that is what I mean. She wasn't sick in the books.