Toronto Sun’s Linda Leatherdale emphasizes the interest costs of long-term amortizations.  She says a $190,000 mortgage at 6% costs you $306,800 in interest when amortized over 40 years.  At 25 years, the interest is just $175,000.  In return for making your lender rich you’ll “save” $180 a month on a 40-year amortized payment versus a 25-year.