Over the last 20 years you have given a bank 860k. More than you borrowed. That doesnʻt include your 20% downpayment or the home insurace, property tax, hoa, mello roos, etc. that you pay to other than the bank. They, doesnʻt matter which bank, immediately lent out your down payment and monthly payments for the last 20 years because your dollars were more valuable 20 years ago then they are today. The lender easily makes more than you over 20 years. But youʻre happy with what you make and that is all that matters.