Actually, you have profited much more. If you put 25% down and your home appreciates by 25% you have doubled your money (net of interest and other costs). Also, newsflash: interest rates are very low these days.
But that last portion "(net of interest and other costs)" is my argument. Interest, property taxes, capital gains taxes, real estate agent fees are all apart of the cost of owning and selling the asset and it usually adds up to quite a bit. Within the first 5 years even with a 3.5% loan you pay around 20% of your mortgage balance just in interest.
