No one should expect the value of their house to appreciate quickly - counting on your home to be a significant part of your retirement saving isn't a winning strategy - but it is reasonable to expect that prices generally will rise with at least the rate of inflation for some time to come.

Potential home buyers have a two-step decision process. First, they determine whether they can afford to make a purchase - does their income safely cover their mortgage payment? Then they determine whether owning is a better financial choice than renting - are the costs of owning a home lower than the cost of renting it?

Indeed, the FHA was born out of the Great Depression, which was also caused in significant part by a foreclosure crisis. Mortgages in the early 1930s were mostly three- to five-year 'bullet' loans, which did not amortize and were due in full at maturity.

Lenders look at potential borrowers from many angles before extending credit: How much of its income will a household need to put into debt repayment? How large is the down payment? Does the borrower have a job with a stable income? What is the borrower's credit score?

The Obama administration deserves credit for quickly ending the housing free fall. In particular, Obama empowered the Federal Housing Administration to ensure that households could find mortgages at low interest rates even during the worst phase of the financial panic.

There is plenty of blame to go around for the U.S. housing bubble, but not much of it belongs to Fannie Mae and Freddie Mac. The two giant housing-finance institutions made many mistakes over the decades, some of them real whoppers, but causing house prices to soar and then crater during the past decade weren't among them.

There is a banking adage that if it's growing like a weed, it's a good chance that it's a weed.