On one hand there are hard-core Keynesians who will wave the flag of inflation as the only cure to a world drowning in debt, even after the mushroom cloud results of their policies going off around the globe "assure" GDP hits +? once every window in the world is shattered and has to be replaced...
It seems to me that the motivation of the Fed is of course hubris but also because fractional reserve banking has to have inflation to continue working.
http://www.zerohedge.com/news/2015-03-22/bis-slams-fed-solution-bubbles-not-more-bubbles-it-avoiding-bubbles-first-place
#bubbles