I think it's a a convenient accident more than an intentional outcome, but one that established homeowners and assetholders benefit from so it's encouraged.
If nothing else, can you actually imagine a politician celebrating houses going down in price? Picture yourself walking up to a podium and announcing that the average 3 bed 2 bath in San Jose is now only $200,000, and what a fantastic achievement this is and how it will help people who have struggled to afford a home. What reaction do you get?
Homeowners would be crying for blood because, whether they care to admit it or not, when it comes time to sell they want 2+ other people working their asses off and saving every penny they can to just _barely_ be able to put in a bid.
I _am_ a homeowner, albeit of a cheap house, but I'd love to see prices fall because I wouldn't mind a second one. A spot on a couple acres near Portland might be nice, and some of them don't look too bad...