I believe that Bush is a good person, but you are right about Obama being the natural result of Bush.
Many people had Bush fatigue. The lib's were tired of the two expensive and seemingly endless wars started under Bush. Conservatives were dispirited by the squishy "compassionate conservatism."
Of course, there were other reasons Obama won (MSM duplicity, etc), but Bush fatigue played a big part.
Notice that there was no Reagan fatigue after he left office. The elder Bush won the next election.
So people dislike the notion of "compassionate conservatism." Not a problem. If you don't want to see it return, say why and others may listen. If you run around blaming it for Obama, sunspots, and ATM fees then you will get tuned out.