[imtringued]

It's quite selfish because there is a savings glut. Lots of reasons why people cut consumption but those savings have to go somewhere and this leads to low interest rates which then fuel the housing market. If the housing market crashes but the savings glut doesn't disappear then the housing market will recover within a year. If you did the obvious thing, namely building more housing then some of that money would have a place to go instead of just driving up the prices of existing houses.