One aspect that sometimes gets overlooked is that it's not always about only yourself. You may be willing to take chances with your own well being, but what about your loved ones? Sure, I could walk away, but what tragedy might befall, my spouse, my child, my extended family by my turning my back on the cult? It's a powerful control tactic, as evidenced by the situation in N. Korea. Grease spot in the road by midnight, anyone?