Buying a house is arguably the most important purchase of a lifetime. There are many benefits to home ownership, including tax write-offs and the freedom to do as you choose (with some exceptions) without having a landlord knock on your door. Yes, a place to call your own comes with rewards, but there are also responsibilities. The landlord, who isn't lording over you anymore, also isn't writing a check to the plumber and the lawn guy. And most importantly, home ownership is a big financial commitment. Here are some tips for figuring out how much home you can afford on your salary.