There are many fans of walking away from mortgages these days. Economic and financial pundits are advising homeowners who owe more than their homes are worth to be as businesslike as the foreclosing banks and simply walk away even if they can afford the payments; taking what is called a “strategic default”. Even rappers are getting into it:

Chamillionaire purchased the 7,583 sq-ft. Houston home for around $2 million in 2006. Now he tells TMZ that the house “isn’t worth anything” but that it was still his most expensive mortgage.

Explained Chamillionaire when cornered by TMZ’s camera on a NYC street:

“So I just decided to make a business decision, to let it go, give it back to the bank. I just didn’t feel like it was a good business investment to keep paying that much mortgage for a house that I’m never at.”

Some buyers -maybe many- are far enough underwater and in dire enough straits that walking away is the right move. I don’t want to give any advice to particular homeowners, but rather make a general plea against walking away to the pundit class who has been advocating it as a good and just choice.

My concern is that there is an intergenerational unfairness to current homebuyers walking away. Past generations didn’t think of a mortgage like ruthless businessman, but rather felt some moral duty towards repayment. This made lending to homebuyers less risky, and thus kept interest rates down. Current homeowners benefitted from these lower rates, and therefore received a transfer of wealth from past generations. If the current generation abandons those social mores against strategic foreclosure and begins walking away from their mortgages en masse, then future generations will have to pay higher interest rates.

This is akin to a time inconsistency problem where past generations have committed to a dynamically efficient regime that is beneficial for all generations but not statically optimal for them, and the current generations is going to toss aside the dynamically optimal regime for their own static benefit. I suspect Chamillionaire has not considered this.

My question is this: are we bequeathing more or less to future generations than was bequeathed to us? I worry that along with global warming and long-term debt this is one more way that current generations are cashing out at the expense of future generations.