It might start that way, but 15 years down the line you will have invested a lot in that house. There is an ideal rate of home ownership relative to economic growth unfortunately the US is well pass the optimum with far to many people owning when it's a poor economic choice for them to do so.

PS: What's missing from much of this analysis is you can have positive home equity but the transaction costs of buying and selling a home put you into the red.