Why don't Americans vote properly in the presidential elections?

Look at our economy. This is all because of George Bush. And now, Obama is following in his footsteps and making the economy worse. Had people originally voted for Al Gore, our economy would be in excellent shape. If that isn’t enough, people voted for Bush AGAIN when he ran for re-election instead of voting for John Kerry. If that isn’t enough, when Bush’s term ended, people vote for Barack Obama instead of McCain. If Americans would have voted for Gore, Kerry, or McCain, our economy would be in better shape and a lot of people would have job. Those three are more experienced and would have helped the economy. But nope, people voted for Bush and Obama. What is wrong with voters?? Why are Americans not voting properly?? Our economy is falling apart due to people not voting for the right people!!!