Look it another way if you had rented a house from 25 years ago you now owe exactly the same monthly to your landlord as you did 25 years ago -+ inflation over those yearsI get that Rooch but I would hate to get to the end of a 25 year mortgage and still owe what I borrowed right at the beginning.
My daughter and son-in-law have five properties and rent four of them out, the four they rent out are interest only mortgages. They treat them as a retirement fund and on their retirement they expect that the value of the houses will have appreciated enough to pay the mortgages off and give them a lump sum.
By a house 25 years ago on interest only for 100,000 pay it off now and you will probably end up with 150,000 to 200,000 in your back pocket.

