Just when you thought the protagonist couldn't be more unlikable than Desmond, they came up with Connor. Connor is such a douchbag. Every line is uttered with plain sneer, arrogance, and idiocy. Even from the way he moves and how he look at others with his nose tilted up is full of douchbaggery. And so far it seems every action he took made things worse.
I liked him as a protagonist. Its nice to have flawed characters to see develop. Due to people being so butthurt about it though we won't now get to see him grow into a far more worthy assassin. Ezio wasn't at all likeable at first, then he started acting like an assassain and people loved him. Connor could have easily been the same, they (devs) were just making the progression from unlikeable and naive to likeable and wise take longer to show it more indepth.
Personally I loved it, how he becomes so grossly cynical toward the end of the game. To each their own though. =)