Parents _do_ feed, clothe, and accomodate all children. They do so by paying taxes which go towards a system which (theoretically) ensures that none go hungry, naked, or homeless.

And I agree that this needs to go up different levels. Your family is allowed to treat you well, but must also contribute to all families in the country. And our country is allowed to treat us well, but should probably also contribute to all countries in the world.