It does explain it. It just argues, correctly in my opinion, that it would be unfair to force an unrelated person to help that person in need. Libertarianism p

It does explain it. It just argues, correctly in my opinion, that it would be unfair to force an unrelated person to help that person in need. Libertarianism posits that all interactions between people should be voluntary, and that the misfortune of one does not justify coercive measures against another.