Oops I voted Luffy because I thought the thread was about physical pain
Naruto endured more than Luffy, Naruto didn't have any friend and nobody acknowledged him. Luffy had Sabo, Ace and the mountain bandits. Luffy didn't care about his own sufferings, while Naruto realized that everybody hated him.
The hatred Naruto received made him an impaired person, like Luffy who was stupid to begin with. If Luffy was raised in the same condition as Naruto, he would be a bloodthirsty pirate (Luffy is violent by nature unlike pacifist Naruto)
Naruto endured more than Luffy, Naruto didn't have any friend and nobody acknowledged him. Luffy had Sabo, Ace and the mountain bandits. Luffy didn't care about his own sufferings, while Naruto realized that everybody hated him.
The hatred Naruto received made him an impaired person, like Luffy who was stupid to begin with. If Luffy was raised in the same condition as Naruto, he would be a bloodthirsty pirate (Luffy is violent by nature unlike pacifist Naruto)