This advice can work out really well, or really poorly. I live in one of the largest cities in North America, and despite nearly three decades of house prices

This advice can work out really well, or really poorly. I live in one of the largest cities in North America, and despite nearly three decades of house prices rising every year, a quarter of the houses in the city are still worth less than they were in 1989. What I pay in rent for my place would only cover about 60% of the mortgage. The only way for your plan to work out would be for housing prices to continue to skyrocket for many years. And they might. Instead, I took the downpayment for a house, plus the 40% I save every month from not having a mortgage and put it in index funds. Things will have to go really well in the housing market and really poorly in the equity and debt markets for me not to come out ahead.