That might have been true at your bank, but not the one we used on our first house, also purchased in 1987. Not only did we put 5% down, but they let us subtract the amount of the new furnace that the house needed, so we actually put down less. We bought much less house than the bank said we could afford, on a variable rate mortgage (I think it started at ~6.5%, could change as much as 2% a year). We prepaid as much as we could each month, definitely made out on the variable rate versus fixed rate. Back in those days, they let you get out of PMI pretty quickly, that was our initial goal. We sold that house in 1998.