An empty house in Gary, Ind. (Jim Young/Reuters)

Should houses be affordable homes, or should they be investment assets? They can’t be both.

In 2004, under the Basel II business standards , if securities obtained a AAA rating, European banks and U.S. investment banks regulated by the Securities and Exchange Commission needed to hold only 1.6 percent in capital against them. That created an enormous demand for highly rated securities. The truth of securitization is that, as when making sausages, the worse the ingredients the larger the profits.

And the highly rated securities backed by mortgages to the subprime sector became the primary cause for the 2008 crisis.

After the crisis, ultra-low interest rates and huge liquidity injections fed the price of houses. In the process, houses morphed from being homes into investment assets.

That aspect of the housing market is what I most missed in the Dec. 26 front-page article “Quick to evict, properties in disrepair.”

If you want easy financing to help someone afford a house, then house demand and house prices go up, and you need to give even more help to the next person who wants to afford a house.

Do we want affordable homes or houses as investment assets? There’s no easy answer, because going back to just homes would also cause immense suffering for all those believing they have, with their houses, built up a safety net.

Per Kurowski, Rockville

The writer is a former executive director of the World Bank.