Let's break this down to a personal level. One of the ideas that this country of the people, by the people, and for the people is to possess your very own home. They say a man's home is his castle. Some people have jobs that can't hold up to that claim. First of all, you own the right to apply the locks to all would be invaders and solicitors, and, secondly, castles look impressive partly to show off.
People do the same thing.
Furthermore, castles were built as safe havens from the world for their owners. In America, not everybody can buy a house, and certainly not the laborers. Thus, to justify ourselves, and because we have to look good to the other superpowers, the little capitalist class that most of us work for build apartments and houses to leach even more cash from us. Now that we established this fact of the land of opportunity, we must cull the home hopers from the home owners. Obviously, the capitalists have to own a home of their own in order to justifiably leach rent payments from the others.