Obama (as all liberals do) tried to have his cake and eat it too.
He believed the Keynesian claptrap about government spending stimulating the economy. To please the left, he introduced Obamacare (which anyone with even half a brain) knew would negatively impact the economy and drive jobs overseas. To please the left, he introduce all this green jobs technology, which since it costs more to make than it sells for, is a job killer - you can never improve a system by introducing an inefficiency into it. Add in anti growth regulations and you have quite a few anchors holding back the economy.
Obama thought the stimulus and quantitative easing would be sufficient to overcome these anchors and the economy would improve. In other words something for nothing - which is the basis of Keynesian stupidity.
All the stimulus did was provide a sugar high - temporarily keeping teachers and government employees on the job for one more year and quantitative easing is nothing more than a backhanded way of increasing our taxes via inflation.