you can get qualified for a loan that's 50% of your take-home pay and you can't even breathe you can get qualified for a loan that's 35% of your take-home pay easily easily and then you have trouble funding your car replacement fund your 401k your kids college fund because you become increasingly house poor over the scope of the next decade it's going to be very hard for you to avoid debt and prosper if your house payment eating up all of your income.