Just another thought about the original question:
In the one book I read about children who come from dysfunctional homes, the question was asked about what "makes" and "breaks" a child. The writer explained that the most common situation that damages a child is parents who are unhappily married or in a constant state of fighting portraying an unhealthy relationship.
There are lots of other factors that could be listed as well, but the writer said that through his years of therapy with children from dysfunctional homes, the parents were not happily married or in a stable loving relationship.
I don't think the writer implies that all children from divorced families are doomed and can't be happy balanced children, it just points out the value of parents being happy in their relationship together as partners and the benefits it has on their children.
Happy home = happy child. I guess this is why the cliche of "older" people saying that you shouldn't neglect your own relationship with your partner is so important. It is so easy to make your whole life revolve around your children, that one might neglect the one relationship that is actually more important than others, because if this relationship is not healthy, all other relationships with your children might suffer as well.