As I've demonstrated on several posts here, the frequency and duration of recessions in the U.S. was significantly higher in the century before the establishment of the Fed than in the century after. Vastly oversimplified, but basically your reason why, laissez faire leads to unnecessarily longer and more frequent system shocks no matter if you're talking about an economy, an ecosystem, or a control system.
I am curious as to any counterexamples of counties with their own currency and a significant economy who have had better economic success without a central bank?
And why in the world should the opinions of a bunch of farmers and small merchants in a pre industrial revolution, tiny agrarian economy at least partially based on slave labor have any relevance whatsoever on what's optimal for our economy today?
Further a concerted effort to manage inflation has probably led to more economic growth than any other policy decision in the last 70 years. How annoying is it right now not knowing what the price of anything you want to do is?