I think Gaara had it worst. Just the fact that everyone was scared of him, and the fact that his own family wanted him dead. I mean u know it's bad when your family wants to kill you. Sasuke would have to be second, cause it must be hard to see your whole family dead. And Naruto third, cause he has some great friends. I got to say thoug, even though I put sasuke as second I think he's such a cry baby. He's like the epitome of the emo-kid. Naruto has it 'easy' cause he got over his trauma and focused himself on positive outlets. Gaara who had it the hardest ended up with a great future and changed completely. Sasuke? well he decided to wallow in self pity. I don't like sasuke.