The real problem with this thread is the failure to come to a basic understanding of the various terms being used and their contextual meaning. we have the terms...asset, liability, appreciation, depreciation, investment, and equity that all need to be addressed before we can even begin to reach a consensus on the risk/reward calculation of home ownership vs renting.
Asset: In financial accounting, assets are economic resources. Anything tangible or intangible that is capable of being owned or controlled to produce value and that is held to have positive economic value is considered an asset. Simply stated, assets represent ownership of value that can be converted into cash (although cash itself is also considered an asset).
A home is not an asset...the equity in the home is the asset. If you have no equity in your home then your home is a liability.
My wife has worked for Chase, Bank One, Wells, and is currently a VP in Residential Mortgages for another large bank and the most interesting thing is that the banks consider the equity in your home as their asset. How can the equity in your home be an asset to both you and the bank that holds the mortgage?
A primary domicile is not an asset and shouldn't even be viewed as an investment. Equity is no good when you can't or won't access it for some other purpose. It is a place to live, put down roots, raise a family, or establish yourself as part of a community. The average length of homeownership is 6 years according to the NAR. Approx. 30% of mortgages are negative or near negative equity(less than 5% equity) but I would consider anything less than 20% equity to be worthless due to the fact that we are in a buyers market as well as the shrinking housing demand as well as the sharp decline of the credit worthy. If you really want to see how good of an investment you have in your home...put it on the market.