I would be afraid, but also happy because there is still someone out there which means I'm not alone. So I'd ask, "Who's there?" And if I get an answer, I'd jump with happiness, throw open the door, and hug whoever the person is. Whoever it is, I'd feel a lot better knowing that I'm not alone in this world. Then maybe we'd go hunt for more people........ Besides, like gatorblu said, how would I know it I'm all alone? If I'm still alive, then someone else might be too.