Dubya started a war of option, which wound up killing many of our fine men and woman in uniform for no real political outcome. He gave a huge tax break to the super rich, and financed it with borrowed money, which destroyed the surplus he was handed. He's one of the very few presidents who left office with a lower DOW, destroying millions of IRAs and 401Ks. He gave us a prescription coverage plan that raised the price of those drugs. He left his successor with a nearly destroyed financial system, and sent millions homeless. I can go on.
But if you're a fat cat, war mongering, pharma stock owner, you did pretty well.