Interesting, there's another thread on here that hypothesizes that if the mother is under "stress" during pregnancy, that can cause the child to exhibit CD tendencies. I replied on that thread that I do feel my mom was under stress during pregnancy.
Now, this thing with my dad. He was an alcoholic, the "mean" kind. He could and did get violent, with myself and my mom. When he was sober, he was still kind of mean, unhappy most of the time. If he ever showed any affection or love toward me, I don't remember. Most of the time, he was distant and uninvolved.
Maybe, if we keep at it, we'll get to the bottom of the "why" of CDing.
Vikki