The only advantage I see from what you explained about mortgages is that you get to become a house owner even when you don't have enough to buy a house. But when it comes to paying them back, you are on your own.
Exactly, for the fact that it makes it very easy for you to have access to money and Property that ordinarily will be very difficult for you to have makes mortgage something that is very interesting for those who their country makes it easy to have access to.