Central bankers like Alan Greenspan seem to think central bankers can be trusted to act with restraint. That's a risky plan, especially given that true and reliable constraints could be put on the money supply by adopting commodity money.
With the economy growing at 2.1%, unemployment at 3.6%, creating 170,000 jobs per month, and estimated underlying core inflation of 2%, no objective data justifies cutting rates that are already artificially low.
The Fed is prepared to squeeze out what little is left of the free market forces in the debt market. The Fed wants full control so it can do "whatever it takes" to keep interest rates from rising above its very-low targets.