Investment bankers buy your home loans and manage you like cattle to make even more undeserved money. For some reason people are satisfied with the illusion that they own a small plot of land with a small box on it. Sure you can make a profit if you know how to flip real estate, but good luck paying your sub-prime mortgage with the job you just loss thanks to this fucked up economy.
Millions felt entitled to live in gaudy McMansions they couldn't afford for the life they though they were entitled to. Bankers took advantage of these people, thus the sub-prime mortgage crisis.