Having a jumbo mortgage, at London Interbank Offered Rate (plus 1%) with your head way above water, makes good sense. Tons of wealthy people have mortgages and put leverage to good use. I would bet dollars to dimes that the vast majority of people on the Forbes 400 have mortgages or wise debt in some form. I live next door to the biggest hockey star (worth 100 million, plus, plus!) in the world and he has two mortgages on one home. Mortgages are really one of the only ways that wealthy people can stay on the credit radar. It's important to have perfect credit when the right deals come calling. I'll give up four safe points any day of the week provided that my money is coming in at a much higher ROI. Have you ever heard of opportunity costs? Didn't think so.