[Imladris]

The thing with Frodo is that he grew intellectually and spiritually. The Hobbits were a fairly simple folk, with simple traditions, with simple thinking. They cared more for the homey pleasantries of life and, on the whole, were optimistic.

The elves, on the other hand, were intelligent and had a more realistic view on life. They realized that things came to an end, even good things. That's what Frodo came to realize as well.

Frodo is not a broken person. When I read LotR for the first time, that is not what instantly popped into my head. He had suffered much and grown much. He's like a tree that grows stronger through the storms. If you keep it sheltered, it won't grow as strong. During the storms it may loose a limb or two, but it's heart -- it's root-- remains the same. And in time those limbs will grow back stronger and different thatn before.

You can either view growing through anguish or not growing at all a lesser of two evils but in my mind, it is not so. Wouldn't you rather grow and discover the truth of the world, than not grow at all and live in a delusionary reality?