When will america fall from superpower status?

Many countries gain and lose power, but some do it quicker than others. I believe that America being a Superpower is a bad thing, capitalism on a scale to that in America is a bad thing because the high consumer culture that it bring along with it leads to many many more problems for the societies and economies of countries which rely on American trade to survive. If you don't believe me, check the events of the Wall st. Crash, bad as it was it led to poverty in many countries elsewhere, especially Germany, which helped cause the rise of Fascism and ultimately WWII.