This isn’t a hypothetical worry. From 2005 through 2007 alone  that is, at the peak of the housing bubble  more than 22 million Americans bought either new or existing houses. Now that the bubble has burst, many of those homebuyers have lost heavily on their investment. At this point there are probably around 10 million households with negative home equity  that is, with mortgages that exceed the value of their houses.

Owning a home also ties workers down. Even in the best of times, the costs and hassle of selling one home and buying another  one estimate put the average cost of a house move at more than $60,000  tend to make workers reluctant to go where the jobs are.

And these are not the best of times. Right now, economic distress is concentrated in the states with the biggest housing busts: Florida and California have experienced much steeper rises in unemployment than the nation as a whole. Yet homeowners in these states are constrained from seeking opportunities elsewhere, because it’s very hard to sell their houses.

Finally, there’s the cost of commuting. Buying a home usually though not always means buying a single-family house in the suburbs, often a long way out, where land is cheap. In an age of $4 gas and concerns about climate change, that’s an increasingly problematic choice.

There are, of course, advantages to homeownership  and yes, my wife and I do own our home. But homeownership isn’t for everyone. In fact, given the way U.S. policy favors owning over renting, you can make a good case that America already has too many homeowners.

O.K., I know how some people will respond: anyone who questions the ideal of homeownership must want the population “confined to Soviet-style concrete-block high-rises” (as a Bloomberg columnist recently put it). Um, no. All I’m suggesting is that we drop the obsession with ownership, and try to level the playing field that, at the moment, is hugely tilted against renting.

And while we’re at it, let’s try to open our minds to the possibility that those who choose to rent rather than buy can still share in the American dream  and still have a stake in the nation’s future.