"Family Conflict"

I come from a family with a minuscule amount of conflict compared to the families of many of my friends. It seems that at least half of my closest friends come from broken families, whose parents have been seperated since they were very young. It seems that as time progresses divorce is becoming more and more common. As mentioned in class during the discussion over this topic, lack of communication was said to be a main cause of seperation of spouses. Why is there such a lack of communication? Considering we currently live in a time where technology has made it possible to constantly be only a text message or phone call away from communicating with someone, lack of communication be the last problem within a marriage.