To become the founding father of a nation, one had to challenge the status quo. From Lincoln through both World Wars, the presidents preserved the honor and tradition of America. All of those dynamics changed during the 37th presidency.
Bill Clinton's oft-quoted remark that, when choosing their candidate, "Democrats fall in love; Republicans fall in line" was a clever way to describe the nominating process for most of the last few decades. But it may be changing in 2012.
While the good news for Democrats is that Obama may be in a relatively strong position to get reelected, the bad news for progressives is he is now clearly just another Democrat with little real ability to inspire or bring about real change.
It's not that the GOP enjoys criticizing this president. It's more like breathing -- you don't "enjoy" it, it's just something you find yourself doing over and over again. It's something that keeps you alive.