These literary templates give TV writers a toolbox of archetypes— the cursed heir, the prodigal child, the matriarch who hides a secret —that can be reframed for contemporary audiences.
The answer lies in the inescapability of blood. In a professional setting, you can quit. In a marriage, you can divorce. But family—whether biological or chosen—carries a weight of obligation that no other social structure does. Family drama storylines exploit this contradiction: we love these people, but we do not always like them.