Historically, you can often save a fortune by renting instead of buying to begin with. Maybe in today's market, a house may seem pretty cheap. However, again, over history, you can rent a much nicer house for less than the cost of interest and taxes when buying a house. Realtor's say 'don't throw money away on rent' but never say anything about throwing money away on on interest and taxes.
And, what do you really have at the end of the mortgage? Maybe a couple hundred grand, in today's market. Or you're underwater and drowning in debt. Rent is like using a debit card instead of a credit card. I never have used credit cards, stupid. Anyway, not an answer to your current problem, just something to think about.
Now if you paid cash for the house, as many of us do, then not such a bad deal.
c