Why did Bush ruin the country
Was it simple stupidity or was there malice aforethought? In Bush's case, at least of some of it can be attributed to his intellectual and moral failings, but for Grover Norquist and friends, it is definitely malice aforethought. The true disciples of radical Reaganism really believe that government is the enemy, and the aim of the war is to destroy it, and if the economy and international status of the country go down too - well that's just collateral damage. For them, the debt and the deficit are their wedges to destroy the welfare state. Wars and bailouts are just a means to that end.
Their greatest accomplishment has been to persuade the American people that they and the country can live on borrowed money.