I had a friend buying a house in 2004-2005. She was getting first-time homebuyer's assistance from some semi-governmental agency: they assign you a person who walks you through the paperwork and gives advice on mortgages, presumably to prevent fraud and rip-offs. The guy was heavily pushing an adjustable-rate mortgage, though: "Look at these low rates for the first two years! And after that I'm sure they'll be reasonable." My friend was outraged, as someone who'd gone into risk management in lieu of college. "How could this guy be trying to convince me to sign up for unknown rates that will rise and could change at any time, when I could just get a 30-year mortgage like anyone else?"
Think of all the people in 2008 who didn't know not to get an ARM, and who might have been pushed into it by some "advice" they thought was good.