Let's be honest a second...family and friends really serve one vital purpose in life: to help us out when we need it. Sure, that's a very basic, evolutionary perspective, but we all know there are reasons we keep people around other than their ability to provide for us. However, there comes a time when their true purpose becomes evident; some people just don't like to see it in such a basic manner.
Me: "We don't have a reason to keep you here any longer."
Patient: "Well, who is going to take care of me when I go home?"
Me: "Don't you have friends? Family?"
Patient: "Well, yes."
Me: "I think it's time they stepped up, then."
Patient: "Well, they're not going to like that very much."