I imagine it'd be the same as every other vital service that's paid for voluntarily. Food, water, medicine, transport... none of which I think are figments of a

I imagine it'd be the same as every other vital service that's paid for voluntarily. Food, water, medicine, transport... none of which I think are figments of an elaborate Libertarian fantasy ;) Perhaps you could explain why you believe the provision of Government services is an exception that requires compulsion?