...as an investment?
Why did you buy it: To live there or to make money on it? To raise your kids there or increase your net worth?
There's nothing wrong with real estate investments, but when you view your house as first and foremost an asset, and secondarily your home, you have your priorities all mixed up.
If you bought it because that's where you wanted to live, then being "underwater" would mean very little.
On a side note, defaulting on your mortgage when you still have the ability to pay, simply because you're underwater, clearly indicates that you have the ethics of that idiot running around town in the spiderman costume robbing gas stations at gun point.
Identical ethics.....he just has more testosterone and/or backbone.
More information about formatting options