The Fed Reserve might be independent, but they can't really act in isolation. If you think QE has damaged markets, you have to imagine what the absence of QE would have done. Most people tend to think that if the Fed had failed to implement QE, our position would have been far worse.
The need for QE is bad enough in and of itself. All QE has done is increased the value of everything while decreasing the purchasing power of it (I might be wrong about this part).
In a way I'm glad they added QE to make sure everything didn't go completely to hell, but there should have been decisions made before it was necessary to avoid it having to be implemented in the first place.