Having sociopathic traits isn't always a bad thing. Especially not for the person with the disorder since they are essentially never unhappy unless they're not getting what they want. No useless worrying and wringing their hands over things which they have no control of. A balanced person is able to be apathetic sometimes and empathetic sometimes - not always one or the other. Their arrogance, in our eyes, is just logical processing and categorizing of people and services and things the same way we organize and categorize animals for study.
I'll have to disagree on that one. While of course for the person itself it's not a problem, I find it to be a problem to everybody else - as they are used, abused then disposed of when not necessary. That applies to small things like interpersonal relationships to big things like how our world works. As for saying that a balanced person is to be apathetic, I also strongly disagree. There's a difference between not worrying for things you can't control and being apathetic. But (and that is a problem I find is much too common in our society) I strongly believe that only empathy is human - apathy is sign of mental illness.