We have paid off all of our debt except for the remainder of our mortgage. I am 55 years old, healthy, and own my own small business. My wife has a full time job. We have two kids 14 and 11. We have $200,000 in a money market and owe 140,000 on our home. We have about 25 years left on a conventional morgage at 6%. Do we use the cash to pay off the house so that we are totally debt free? Thank you.