Do they owe them anything? Once they turn 18, do they need to be part of their parents' life? Do they need to do anything for their family? They say blood is thicker than water, but does being related to someone make you owe them anything? Do people need to do anything for their family, or is family just a way society encouraging codependence?
Do children need to visit their parents on the holidays? Do they need to have children of their own so thier parents can have grandchildren? How close are the bonds of family?