Because 30 years is typically the longest term you can get. True there are "40 year" mortgages but generally they are a worse deal than a 30 year and targeted

Because 30 years is typically the longest term you can get. True there are "40 year" mortgages but generally they are a worse deal than a 30 year and targeted to people who are bad at math. http://www.bankrate.com/finance/mortgages/is-the-40-year-mortgage-a-joke-1.aspx http://www.bankrate.com/finance/mortgages/is-the-40-year-mor...