GreatTeacher: I think on some level they know that they have issues. So they like to surround themselves with people that tell them how wonderful they are. They're like good mirrors. Then, when you call them out on their bad behavior, you become the bad mirror, reflecting back to them their own brokenness. And they can't stand it and they lash out.
Great point.
Leaving the religion doesn't necessarily mean overcoming our "issues." In fact, there is no reason to believe that we would--without a great deal of careful introspection and hard work--overcome those issues. Even this it is hard slogging.
People generally continue to act as they were raised. It's classic operant conditioning and behaviorism.