You both buy comporable $ 500,000 homes next door to eachother. You buy your house free and clear with no mortgage. Your friend puts 10% down with a 30-year mortgage and smiles slyly when you ask her what she did with the rest. What does she know that you don’t? Who is going to be in the better financial situation in the future? If you are going to answer, back it up with a quality discussion!