Every phrase you wrote has an implicit conditional in it: > Children may take care of their parents, families may take care of each other, friends might offer

Every phrase you wrote has an implicit conditional in it: > Children may take care of their parents, families may take care of each other, friends might offer housing and food to their friends. At least one theoretical advantage to the state system that rarely gets talked about is that while its assistance also has the same conditionals, at least in principle, the conditionals are dependent on objective criteria. The state of your relationship to friends and family is immaterial; you don't have to accept terms imposed by religious charities or other organizations that will attach moralistic strings.