Decline of US empire.
You guys are way to arrogant and lack humility and eventually you will cross paths with a very strong and well developed China (probably) and the Chinese will be like, "nope, not backing down any more" and you will be like "but we are Americans, we always get what we want".
And then you will fight a war and lose, but not before ruining the world, and dragging us into war with you.
