One good thing about the Bushes is when they’re time was up, they retreated from politics (mostly) and went back to being private citizens.
A difference between leftists and conservatives is that politics are everything to the left. They don’t separate the political realm from everything else. Indeed, private lives, business, the arts, even sports (have you watched ESPN lately?) exist only to serve as appendages to the political agenda.
The Bushes could leave politics, or at least, tend to them only part-time. (i.e. Helping Jeb when he wanted to continue the dynasty.) The Obamas, like the Clintons before them, cannot leave politics because they have nothing else.