Bush got eight years to do his thing and his supporters didn't like hearing gripes even after a number of years into it.
This would be a lot easier if people had more a "look and see" policy -- you wanted space for "your guy" to solve the country's problems (and it didn't pan out), why not back off a bit? What are you expecting?
Even Obama said he wasn't Jesus.
ironically, btw, I think systems tend to be self-stabilizing. The "crashes" are basically a faulty system's way of righting itself. Unless there is a total catastrophe where things blow up, basically everything cycles.