The problem is people are gamblers and don't believe that it will happen to them because everyone knows that property prices "always" goes up
Lets face it that's the way economics is done today -- look at government budgets --they are all based on the dream scenario, IE what could be, might be, hopefully is, reality doesn't come into it.
When I was in business you based your future income on about 75% of what you got last year, and that was the absolute maximum, not any more, they base it on dreams of the perfect world