That's what I just don't get. I can understand not liking Obama and disagreeing with his politics, but I'm not sure by what objective measure we can judge him a worse president than Bush.
To piggyback on your list, here are things that occurred on Bush's watch:
- 9/11
- The starting of two costly and protracted wars
- The mishandling of the Hurricane Katrina aftermath
- The crashing of the economy
Can anyone point to one thing on Obama's watch that competes with any of that?
You are making an error. You are thinking in terms of an objective standard. You can understand reality a lot better if you give that up. Start with the assumption that people who say that Obama is the worst really mean it. Then work backward from that and figure out what they must mean.
Nota bene: I am completely serious about this. I am not joking. At all. I can say this safely, because nobody will take me seriously anyway. That is the disadvantage of thinking about things, so you pretty much have to love understanding enough that you are willing to suffer for it.
So, that having been said...
9/11. Fantastic stuff, though it's probably wishful thinking on the behalf of the truthers that it was engineered by the government, it certaintly caused a hard right turn and provided a basis for believing in American superiority. There is nothing more an American loves than a 9/11, unless it's a Pearl Harbor or a Lusitania. That's because it gives us an excuse to go primate-fertilizer.
Two costly and protracted wars. Again, great. Yay military (until they come home broken, of course, in which case to hell with them). Boom boom boom. Mission accomplished. We're liberators. Everyone loves us. What, they don't? More boom boom boom.
Katrina is the easiest to understand. Katrina was God's wrath against the evil immoral New Orleans people, who were probably all gay, practices Voodoo and other Satanic rituals, and were even black, too. Bush looked out the window of Air Force One showing Bush overseeing Baby Jesus' a-stompin' and a-killin' the awful un-American heathen scum filth pigs.
The "crashing" of the economy was the best thing. Nothing since the Great Depression has consolidated more wealth into the hands of so few who, because they have the most wealth, are the most deserving of it. All of those great people now get to have real estate at a bargain price.
Now, you may has some difficulty believing why even the victims of these policies seem to think they are great, but that would, again, be an error. People don't vote in their best interests.