Some kinds of immortality can really kill you. He was a dark man. She was made of glass. Centuries of tradition separated them. Nature revels in waste.
Peace is much harder than war.
That is why only the heartiest of souls survive it. In a perfect society, a perfect place can be found even for a perfectly broken man. A race can be won or lost in an instant, but even in a race that takes a century to run, you can still win or lose by a nose.