I grew up in a household that was abundant in two things; computers and marital tension. My father is an IT entrepreneur. My mother is a teacher. I have a feeling that my father was a lot cooler in college when they met. Of course, when the ex-hippie turned pseudo-philosopher graduates from college and runs into the brick wall of real life, certain decisions have to be made. He runs into computing in the late 70's and it's a match made in heaven, far stronger than anything my parents ever had. As the divorce was happening, I blamed it on tension created by certain members of the extended family, but I was 12 when they separated, so my analysis at the time holds no weight. In retrospect, almost 13 years later, I now see that the computer, or at least the number of hours logged in front of it had much more to do with it. Admittedly, the divorce messed me up for quite a while, as I think they mess up most children (especially at that age) but things are much better now than they were before. Both my parents remarried and are extremely successful now in both their careers and personal lives. My sister and I both lead productive, well-balanced lives and have great relationships with both sets of parents.

I'd venture a guess that you could make a correlation between ANY job that elicits long, dedicated hours and divorce. It's the way social evolution seems to work. Community -> Family -> Individual -> Online Groups -> Large Online Communities. That may be a little contrived, but hopefully you all get the point.