President Donald Trump’s proposal to introduce 50-year mortgages promises smaller monthly payments, but borrowers would pay dramatically more in total interest and build home equity far more slowly. A new Realtor.com analysis found exactly how significant that extra interest could be, and in some cities, it’s nearly $1 million extra. The analysis compared mortgage costs for a traditional 30-year term versus a 50-year in three types of real estate markets. Crunching the numbers revealed an alarming truth: ...