Offer your thoughts or opinion on the input financial query or topic using your financial background.

Why is being “upside down” on a mortgage so bad?
tl;dr: when everything is going great, it's not really a problem. It's when things change that it's a problem. Finally, home loans are extended over extremely long periods (i.e. 15 or 30 years), making any fluctuations in their value short-lived - even less reason to be obsessed over their current value relative to the loan. Your post is based on the assumption that you never move. In that case, you are correct - being underwater on a mortgage is not a problem. The market value of your house matters little, except if you sell it or it gets reassessed. The primary problem arises if you want to sell. There are a variety of reasons you might be required to move: In all of these scenarios it is a major problem if you cannot sell. Your options generally are: In the first option, you will destroy your credit. This may or may not be a problem. The second is a major inconvenience. The third is ideal, but often people in this situation have money related problems. Student loans can deferred if needed. Mortgages cannot. A car is more likely to be a lower payment as well as a lower amount underwater. Generally, the problem comes when people buy a mortgage assuming certain things - whether that's appreciation, income stability/growth, etc. When these change they run into these problems and that is exactly a moment where being underwater is a problem.