Now we have to pay for the decades of easy money and irresponsible spending.
Exactly. Thanks to the Cantillon effect those closest to the money printers got money very cheap, or for free, and were able to buy assets. The rest of us get the bill, and our savings stolen.
Do you think a hike to 10/15/20% is possible? No. If the interest rate were raised to 10%, the US couldn't service its debt (by taking out new debt).
They can't deal with it. Not only would they crash everything, they wouldn't be able to afford their own debt. It also puts a future out of reach of many young people who will be unable to buy a home even if rates are 10% without a massive market crash of prices. The trouble is, politicians aren't going to take the pain - they don't want to answer to the boomers who got rich by indebting the future generations.
The only solution is a default, a war, or both.
Japan is trying to prop up its currency by printing and buying its own bonds. The whole thing is breaking.