> One of her wonderful worldviews was to rejects altruism as a moral imperative, arguing that individuals should live for their own rational self-interest. Social security, based on the idea of supporting others, contradicts this principle.

This position was already pointed out by Plato (in the Gorgias IIRC) as being inconsistent. Political systems are made up by people - if a society, in particular a democratic one, has certain systems in place, then this is probably because it was (at least believed to be) in the people's self interest.