I think there is no end to demand, just the price needs to be reasonable, the faster we get back to 2003 (if and when it occurs) prices the better it will be for everyone, then it can move up at 5% a year and everone will be happy, Realtors will sell again, people will be able to buy (and eat too), Employers will attract workers etc ….
If it is a long slow decline, it will help no one.