Is it time to get rid of the concept of "American exceptionalism"?

By that I mean, the idea that America is the “leader of the free world” or that we are a “shining city on the hill.”

I don’t see this as particularly a Democratic versus Republican issue as both parties have espoused the concept at times so I would like the discussion not to descend to partisan bickering if possible.

Should the United States act as if it is somehow first among nations in the world? Is being a Superpower really important or should we act in concert with other nations to solve the problems of the world?

In General, off-topic rants will be flagged.