I never said, nor even implied that was the case. If they did, they are repulsive. If they are the victim of circumstance, than the description doesn't apply, so I'm not sure what you're issue is, other than you just want to rant. However, the current "mortgage crisis" is directly a result of people who knowingly bought houses they could not afford.
It's a little more nuanced than that. There are people who got into mortgages that simply could never work, but I believe that's a small element of the at-risk mortgages. The broad crisis was caused by people being sold mortgages that they
could afford at the time, and using them to buy houses, or using them to withdraw equity from their homes, while choosing to, or being told that they could, ignore the back-loading in the mortgage because the house will appreciate in value and so it could be sold or the mortgage could be re-financed before the back-loading became a problem.
ARMs were being pushed by Greenspan as late as 2005. They fueled the housing boom, which drove up house prices, which allowed people to use their homes as a credit card, which gave them money to spend, which drove the economy, which made Greenspan happy.
This didn't happen in a vacuum. People didn't simply wake up one day and decide to force the banks to give them a seriously risky loan. The banks made the money available, because they thought they couldn't lose. People took that money because they thought they couldn't lose, due - in no small part - because that's what they were being told by everyone up to and including the Fed. Chairman.