It's because we've been broke for awhile and, under modern monetary theory, the only consequence to being broke is social unrest. Prices are now getting close to where people are being like WTF, and so, they are finally trying to cut back via monetary policy/interest rates. But what if we have another unavoidable crisis or war that requires more spending? The money will come from further inflation of prices. We are tolerating $15 McD's combos but will we tolerate $30 Mcd's combos? How will that affect people's psychology and social unrest? Our enemies know this. They will take advantage of it, if they can.