There are a few things that may have contributed to my problem. My mom did have a difficult birth with me, and the perosn who did the delivery swasn't good (I'm told.) She also drank some druing pregnancy. I myself took a couple of blows to the head during childhood and adolescance and also used a fair amount of drugs from age 12-23.
Despite all of that, I believe that the main cause of my condition is genetic. My father, a brilliant writor, could not drive, maintain a relationship, or hold a normal job for long. He was very ecentric and had trouble changing a light bulb (he'd give away a lamp when the bulb burned out because he thought it was broken.) He moved every few months, talked to himself, and spent much of his life in poverty despite being semi-famouse as a writer. He was given a word processor and gave it to me because he couldn't figure out how to use it.
My mother has many of the same traits, to a lesser degree. She is lucky to have married young, because she has never been able to hold a job for very long and has many eccentric traits, though she, also, is inteligent (and a published writer).
It was theire comon traits that origninaly atracted them to each other, but the marriage didn't last long. My stepfather is the only bread winner in the family, and thank god for him.
So, my belief is that, at least in my case, the main cause of asperger's is genetic.
