Re: Your favorite character and three reasons why
1: Style. Every character design save for his first one makes him look cool. His fighting style is awesome aswell. Or... it was before he learned Susanoo, lol.
2: Story. Every shounen hero is the same guy. He's some "balls bigger than brains" moron who always wins because he believes in himself. The rival however usually trains harder for less reward and has a less sugar coated story. They have real, hard pasts that make you care more for the conclusion of their story than you would for the main character. Same for Vegeta, Hiei, Tokiya, and tons more.
3: He's a genius. I tend to hate it when characters win fights based on willpower and faith alone. It's not realistic. I'm much more inclined to enjoy fights where a character wins through deciept, greater power, strategy, or some other distinct means. When Sasuke's overwhelmed, he gets his ass kicked. It's realistic. But when he shines, he really shines, thanks to being elite in all forms of combat.