Nero is, hands down, one of my favorite villianous characters in Star Trek. He is not a superhuman, he is not an evil genius. He is, by design, and everyman who faced an incredible crisis, and was left with nothing but revenge. He has gone psychotic, breaking from reality because of the time travel. Why in all of the galaxy, should he treat these people with any sort of formality when he has a planet to save and revenge to exact."Hi Christopher, I'm Nero" was amazing. It's so different than the other shakespearean lines people utter. Really, Nero doesn't give a crap about these guys. They're NPCs who wandered into this game of revenge against Old Man Spock. They're 200 year old ghosts to him. He might as well be talking to holodeck characters. And he's a miner, way more casual and there's an efficiency about him. "Hi, can you come over to my ship or I am going to kill you."
We all like to think we're Kirk in our stories, but we are closer to Nero than many humans are every comfortable to admitting. And that is what makes the story so incredibly good.