Fear of Committment in Men a Genetic Flaw? Are we slaves to social norms?

I saw an article today about there being a gene that may cause men not to form strong bonds with their partners.

http://news.bbc.co.uk/2/hi/health/7593301.stm

Basically it says that this gene may affect how a man's brain uses vasopressin. Strangely enough this gene has also been associated with autism. There are a bunch of married men in their surveys and I guess the married men with this gene are much more likely to have marital problems and their wives are more likely to report unhappiness with their connection.

What I don't understand is why the heck did these guys get married? Did social norms make you do it? If you can stand before God/a church full of witnesses/your "loved" one and swear to cherish them and love them for better or worse, etc., etc. and you don't mean it...you have a problem. Sometimes I wonder if my desire to love and cherish one man, and my desire for a white picket fence, a 2,000 square foot house and 2 children is based on social "norms" if it's part of my biology or if it's just part of "me". I'll save this for another post but let's just say most men I've seen romantically treat me like crap and I'm coming to the realization that these desires may not be my maker's ultimate plan for me. If it's social norms that got me here, I wish someone would go against the social norms when they disagree. Perhaps they could break me from this need I feel.

They say that psychopaths and sociopaths are aware of social norms and niceties but don't "feel bad" when they break them. Does going against them make you a psycho/sociopath? I think where I am going to draw the line (with my very limited knowledge on the subject) is that when you knowingly hurt someone, that is "bad". I'm not saying that men who struggle with commitment need to be put in an insane asylum. I think what I am saying is that ignorance is forgivable--to a point. When we turn a blind eye, when we *avoid* the right thing, when we are lazy and don't spend any of our time trying to better ourselves, ignorance becomes inexcusable just like stupidity and blatant meanness.

I wish I were a better writer because I have a lot of thoughts in my head but I run into difficulty conveying them eloquently.