Housing real estate is way over priced in the USA.
Now that banks aren't required to hand out loans (backed by taxpayers) to those who can't repay them, we should be in better shape.
As all extensions of credit swell the supply of money (at least until repayment is due) this concern reflects doubt: can nations govern the independent power of money, so that credit bubbles don't implode? Hist of past half-century offers little reassurance they even know how