No one said you're trapped in the woods with a "nice man." Just with "a man." No one has any idea if the man is good or not. Obviously if the man was not a predator, I think everyone would rather be trapped in the woods with him than a bear. But you don't know. You just know he is a man, don't know if he is good or bad. It's a wildcard. The chance he is evil, and the consequences of the man potentially being evil, do they outweighs the risk?