According to some research an American buy around 7 houses in his whole life. But the thing is they buy and they sell, they never keep all 7 houses. If they do, they can generate a regular income that will help them grow more economically. People sell their houses to get rich, to buy new house or to get out of financial crises. But in my opinion just few changes in your mind set and the way we had been dealing with our properties can make a huge difference and provide more security to out economical conditions.