The worst bubble and a completely unsustainable one will be the government bubble. As the government expands, the private sector will decrease. The private sector money needed to keep the government afloat will be unsustainable as taxes are increased and prices are raised.
“During the 1990s, inflationary Federal Reserve policy fueled a tech stock bubble. When that bubble burst, the Fed inflated a larger one in real estate. Now that the real estate bubble has burst, the Fed is inflating the biggest bubble of them all – a bubble in government.”