More than a million ultra-long mortgages have been issued in recent years, with homeowners making payments into retirement age. As interest rates rise, many buyers opt for extended terms to lower monthly payments. However, this trend raises concerns about the implications for retirement planning, as experts warn that individuals may need to use their retirement savings to pay off mortgages. While currently only a small percentage of mortgage holders are repaying beyond age 65, the long-term effects of this trend remain to be seen.