Look at the Numbers
At an appreciation rate of 5% annually, a $200,000 home would increase in value $10,000 during the first year. That means you earned $10,000 with an investment of $40,000. Your first year's ROI (return on investment) is an amazing 25%.
Of course, you are making mortgage payments and paying property taxes, along with a couple of other costs. However, since the interest on your mortgage and your property taxes are both tax deductible, the government is essentially subsidizing your home purchase. Your rate of return when buying a home is higher than most any other investment you could make.