An adjustable-rate mortgage is a home loan where the lender can change your interest rate. Usually, that means your rate goes up. And up. And up. So why are so many people so eager to get themselves into a variable-rate home loan? Because they’re thinking about the short term. They’re not looking at the big picture when their rate hits double digits. Or when their monthly payment soars. Or when they can't sleep at night with that adjustable-rate mortgage looming over their head. That’s why you s