This is a fair point, but I would respond that having nothing backing our currency whatsoever is equally if not more problematic. Right now we're basically just coasting on the presumption of interdependence as well as the perceived stability of the dollar, but if the G20 or OPEC are any indication there's no guarantees that will be the case forever. I'd also point to the massive devaluation of the dollar during the '70s as indicative of the rashness of Nixon's decision to completely end the gold standard.Depends on what you mean by the "perceived stability of the dollar". If what you're referring to is the possibility of a currency crisis, I would say this is more of a long term threat and going onto a currency commodity standard would potentially create as many problems as it would solve. Also, what most hard money advocates usually want is really credible government commitment to monetary consistency and restraint. But a hard peg is no more invulnerable to caprices of government change than a floating currency. Just look at what happened to Argentina's hard currency board of the 1990s, or the gold standards of the past. These pegs are just as flimsy as the governments and conditions backing them. Meanwhile, as Volcker demonstrated in 1982, central banks can pursue tight monetary policy without having a currency peg. Ironically, had the Fed been under the control of Congress or the Presidency in 1982, as Ron Paul and some of his supporters seem to want, Volcker's intervention may never have happened. Magic bullet? I think not.
Also, the massive devaluation of the dollar during the '70s was as much a testament to the artificially inflated price the dollar commanded in the '60s under Bretton Woods as anything else. Bretton Woods worked well enough for its time, but it was also essentially a massive ticking time bomb. Had Nixon not abandoned it, not only the United States but the whole world would have been forced into sharply contractionary economic policies, and after the consequences of this, the dollar would have lost its (pegged) reserve currency status anyway.
You believe in free markets; which is more free- a floating currency whose value is determined on the open market, or a government-induced price peg?
Certainly bubbles distort prices and encourage malinvestment ... although you have to define price distortion, and therein lies the 'Lucas critique'.