Quote from lasner:
How did real estate prices not plummet
Several reasons.
Going in, there wasn't a real estate bubble to drive prices well beyond reality.
You also didn't have legions of people who couldn't afford their mortgage back then. Not only did you have to prove you could pay back what you borrowed, you had to put down a serious chunk of change upfront.
Low turnover. Few people were eager to flip into a new house with an interest rate that was 2-3 times their current mortgage.