To be fair, most people who hate Bush
do have intelligent reasons for it, and are just sick of having to rattle off the whole list every time they slam him. Bush bashing might be "popular" but then again, so is hating on Hillary Clinton, and I'll bet you $100 the average Hillary hater can't even tell you what they think is so bad about her.
No offense to any americans but, Why Did you guys elected bush again?
Because politicians have a knack for steering the national conversation away from issues that actually have any real importance and thus make themselves look better than they are. A shame, yes, and if there were a way to make it illegal we would. But Americans, by and large, are... well, not stupid so much as just too lazy to actually think about stuff.