"I think it is very urgent that it become rapidly understood that there is no justification in history for the existing position of a government monopoly of issuing money. It has never been proposed on the ground that government will give us better money than anybody else could. It has always, since the privilege of issuing money was first explicitly represented as a Royal prerogative, been advocated because the power to issue money was essential for the finance of the government-not in order to give us good money, but in order to give to government access to the tap where it can draw the money it needs by manufacturing it. That, ladies and gentlemen, is not a method by which we can hope ever to get good money. To put it into the hands of an institution which is protected against competition, which can force us to accept the money, which is subject to incessant political pressure, such an authority will not ever again give us good money."
...read more: http://mises.org/story/320
