In these days of low interest rates, it can be a great idea to get into the real estate market and invest in a home. However, if you don't have the funds saved up to buy a home outright, it may seem like more of a burden than it's worth. The good news is that you might qualify for a mortgage loan, which tend to come with more favorable terms than a traditional bank loan. Here are three reasons why a mortgage might just be the best money you ever borrow.