'Permit me to issue and control the money of a nation, and I care not who makes its laws.' Mayer Anselm Rothschild, 1790
At least, he was honest. 
It's clear you don't like the FED, but all countries have their central banks and I wonder how an economy would be without them.
An economy without a government-mandated monopoly on the creation and management of money would allow the free market to determine the best money. Nearly everything in an economy--houses, cars, computers, software--is product of the free market. Consider the incredible accomplishment of manufacturing 3nm chips, powering the iPhone in your pocket, and delivering immense computational performance for your convenience and satisfaction. That wasn't dictated by some bureaucrat office; it was produced under the pursuit of profit, competition and innovation.Why, then, should money be any different? Why assume it would perform worse if left to the competition of the free market?