Gentleman sociopath?

If not morals, why might a sociopath choose to do something "good" or help people? A reader recently wrote about how his sense of aesthetics keeps him from doing anything base, such as brute strength violence.

Similarly, from another sociopathic reader regarding the existence of the "gentleman sociopath":

I have read as many materials about sociopathy. It seems that the clinical model tend towards the violent and lack of self-awareness of the afflicted. I'm confused by that. I have over forty years and have done phenomenally well but there is a certain dichotomy to my nature that challenges what I read. Self-awareness is something I have in spades. It comes in waves but the overall tenets of my meticulous adaptation and mimicry have served me well. I am reasonably successful perhaps even quite successful. I am a charismatic individual that can engender such passionate responses but I don't quite get their ultimate utilitarian value. I am fully capable of expressing emotion though it typically is self-serving. I find people useful and fascinating and in my job I am an outgoing and rather likable chap. I know what to say to make the ends meet. But the act itself is mechanical. You are the first I have read that seems to be broadening the understanding of the bonds that bind us together and yet I wonder, what of the gentleman sociopath. The one who realizes that the flashes of violence and utter revulsion at humanity leaves the efforts to connect empty and like a well played out theatrical piece. One of which I am always the star; even if I sit back and do nothing of great significance I manage to impact other positively. But I fail to see the reward. Is this all there is? A chance encounter, fleeting, where love is extricated for my benefit and validation of my greatness. Psychotherapy and psychology seem only to capture the seen and make formulaic profiles of those who manage to fall into the system. I have absolutely no desire to be anything else. There is an elegance in the primal connection to my stripped bone need to see the tethers that bind us to this false sense of social propriety.

But these tethers that bind us all demand to be plucked so that I can rest assured my genius is not wasted. I am not adverse to violence and my sexual appetites are gruesome at best. But I have control of them despite a few slip ups. I appreciate greatly the time you took to read my letter.  What Answer I receive from you will be welcome.

I have lived long enough to grow tired of the clinical definitions and confines of sociopathy. There are many of us who have formed quite mutually beneficial bonds with one another and find success in a tedious world a far better path than the wanton rebellion. I suppose, while I will be frank in admitting I haven't the foggiest idea of what drew me to your writings, you must have seemed to at least be less rigid in your understanding of this particular detachment. Except with those like me, I have never before felt an interest to express this. You also are likely aware that I would be remiss if I didn't say that any questions you have for me would be welcomed.