Again: you either invest into a realty, that happens to be your home, so that you don't have to pay rent, or you pay a rent and you invest into something else.

Again: you either invest into a realty, that happens to be your home, so that you don't have to pay rent, or you pay a rent and you invest into something else. You have to always consider the opportunity cost before you decide which one is a better decision. And it will depend on the market.