Everyday I have clients that wonder whether they should continue to make payments on a home that has lost so much value. I think you need to consider whether you are in an interest only loan and the payments will reset to something that is not affordable. The other consideration I take into account are what the prices for a rental would be and if its similar then potentially staying in your home is a better bet depending on how far behind on your mortgage or upside down you are and therefore the length of time it will take to build equity. As a bankruptcy attorney I believe it is imperative to go over all options with a client and let them make a informed decision.