Good analysis, GM, most people would save money by renting because it is easy to buy a larger, nicer house than we need. It makes sense to rent if you take the extra money and invest it somewhere with a decent rate of return as personal residences aren't great investments.

If you aren't going to invest the extra money but instead spend it on a car or something else, then you may be better off buying so you are 'forced' to increase your net worth over time with monthly payments.