Family dynamics in the hone growing up largely determine, or at least, influence, developmental outcomes.
Children of divorce are deeply affected, and suffer from far more emotional and psychological issues than children from stable, loving homes with a mother and a father. It takes a mother and father to raise a child properly and impart the lessons of family life. Those who grow up without observing and witnessing a productive marriage generally will struggle with marriage when they grow up, since they don’t have any strong models to emulate.
Of course, we wish everyone would have a good shidduch. I certainly wish the same for myself, and I also know that some of us do have “special needs;” as someone raised without the benefit of an Orthodox family and years of day school education, I would most likely best relate to someone who grew up in a similar type of home. Likewise, 2 products of a broken home would probably be able to better relate to one another.
In my own experience, kids from divorced homes (particularly girls, but males, as well), are generally diagnosed with a form of mental illness and suffer from intimacy problems.