@MM - no, you clearly don't understand it based on what you just said.
"Make no mistake about it, having a private, for profit central banking cartel control the supply of a nation's currency is a HUGE PROBLEM, and one that is known throughout history to FAIL"
First off, the Federal Reserve is not private. It is held accountable by Congress and has its Chairman appointed to it. Nixon famously manipulated the Fed to get himself reelected by having the Chairman do extra rounds of bond buying (I think....maybe it was a lowering of interest rates) to stimulate the economy, which contributed to the massive inflation of the late 70s.
Secondly, it is not for profit. You can read in its own charter that all "profits" made by the bank are returned to the Treasury. So yes, it makes money, but it gives 100% of what it doesn't spend to the government. The stated goal of the bank is not to generate profits, either, so I'm not sure what there is to worry about there.
And please, give me examples of how central banks throughout history have failed. First off, since the creation of many modern financial devices, and indeed the modern banking and financial system, didn't happen until the late 1980s, you can't really count anything before that. Before these inventions, investors didn't have any way to insure themselves properly against risk, because many of those insurance vehicles didn't exist. Also, the deregulation has allowed for interstate banking, making national banks susceptible to regional risks.
So, we have banks from the late 1980s onward. The Japanese Central Bank didn't cause the asset price bubble that led to the "Lost Decade" and if its measures had been properly supported on the fiscal side of the coin, the "Lost Decade" might never have happened. Next we have the ECB - which is hardly a fair comparison because its chained to what several nations collectively decide on doing and has very limited autonomy. The Bank of China has complete control over the whole banking system in China - unlike the Fed - and is facing massive losses.
So I really fail to see what central bank you are comparing the Fed to when you say central banks throughout history fail. Also, I fail to see an argument as to why absolute values of currencies matter more than relative. You say the dollar's status as a world reserve currency has held it up, but the pound has done just fine while depreciating in absolute value and its not a world reserve currency.