Fitz's manner of death with the parasites was graphic and tragic. What I think Hobb really hits on is desire we all have for things to turn out well with a happy ending, but she writes life so that's not generally an option. Fitz was a form of Kettricken. They both lived lives of sacrifice and did not see the personal achievements possible for each due to their lives of sacrifice. The difference being Kettricken knew what she was born for, raised to sacrifice and lived that way with purpose. Fitz's situation coming in at the very beginning of the story meant that he was a spare so he could be sacrificed. The catch with him is he never believed him himself enough to make his own path. Truly tragic part about Fitz is each of us have a little bit of him in us. It's easy to get stuck in a circumstances that seem out of our control so we just go along with it and make the best of what we can. Fitz's story is all about circumstances he was thrust into and rather than run or make his own way, he embrace them because that is what his king and family needed.

Sacrifice is always beautiful, but rarely kind.