[sethrin]

It's not that no other system can do what government does, it's that there is no other system. Government is a local monopoly on violence. Getting rid of violent (coercive) government does not remove the ability of men to be violent. Because violence is the birthright of man, we develop these agreements about when it's okay to be violent. These are called 'governments'.

Libertarianism is an idealist philosophy which elevates individual rights over that of the collective. This is not a logically inconsistent position, but the real world is not required to conform to what you think is logical. In the real world, rights don't exist if they're not enforced, and you'll note how that word is also inseparable from violence. It would be nice if we lived in a world where libertarianism were possible, or communism too for that matter. Unfortunately such is not the case.