The "boogeyman" borrower who borrowed millions, made no down payment and had 0 income rarely exists.
So what? Not every investment goes up, and even those that do go up rarely do so linearly. As far as your situation is concerned, who cares if the value dropped 50%. You were smart, bought something you could afford (presumably on a fixed rate), and just kept making the payments. Over the long term prices would come back.
The problem came in with people buying houses they could clearly not afford, and with no cushion for any downturn. They were not boogeyman borrowers, and were very common in places like Florida and Las Vegas. People who could only afford the teaser rate payment on a 3/1 ARM when fixed rates were at historic lows. Not a smart financial move on their part.