When Revolution premiered in the fall of 2012, it looked like NBC had a hit on their hands.  Then the show went on hiatus along with The Voice, and when it came back, the audience did not come with it.  I managed to stick out the entire first season and, like most of America, was a bit surprised that the show was renewed for a second season.  After a few of those second season episodes piled up on the DVR, I realized I had no desire to continue watching the show, so I bailed.  I was surprised that the entire second season aired, but not that it got cancelled following that season.  I have no idea if the quality improved and, despite some actors that I like, am not sad to see it go.