So if this is the case...why not just use the current monetary system? Same setup basically. Based on debt and trust of the government that the paper they print their name on is worth what they say it can buy (i.e. $5 dollars worth etc.).
Banks are using ripple-like system for interbank money transfers for decades. It is called SWIFT. This is one of their greatest assets.
All ripple does is democratization of that idea by bringing it to anyone willing to use it. Power to the people. Take it or leave it.