Those calling for an end of the Empire don't seem to realize that the federal state's vast entitlement programs are ultimately funded by the Empire: not directly, but indirectly via its ability to foist trillions of dollars of debt on the world economy.
The believers that hot wars are all there is to the Imperial Project fall silent when their share of the swag might be threatened. Unsurprisingly, we want the financial benefits of Empire but recoil at the entanglements of Empire.
Imperial Rome offers a useful template for what happens when the domestic populace gets dependent on Imperial wealth: the notion of sacrifice for the nation goes out the window and bread and circuses become the sole source of state legitimacy.
Needless to say, collapse follows these developments like night follows day.