paying off your home mortgage is disadvantageous since you can take your mortgage payments as a tax deduction.  here's another one for you, if you sell your house and use the proceeds to buy another primary residence within 6 months you don't have to pay capital gains tax on the sale. so sell your house, buy another for cash, and then take out a mortgage on it and pocket the loan amount as it's now tax free profit. then do whatever you want with that money, like start a business, buy more houses, etc.
United States