He's an intriguing character and as much as I dislike him, I don't think there's anything wrong with you if you like him. He's a gray character so it makes sense for the fandom to be divided.
And then you have "Harry Potter And The Chamber Of Secrets". The stakes are slightly higher here. A little girl gets kidnapped. Harry discovers that some adults are actually really stupid. But he still manages to defeat Voldemort yet again. He's allowed to succeed and return home, knowing that he saved the lives of countless.
But as an abused child, he is easy to manipulate. He doesn't notice when he's a pawn in someone's scheme because there really is no one checking to make sure he's treated well. If Harry Potter was killed at Hogwarts, Dumbledore wouldn't have to worry about his family making a fuss.