I think ToesUp makes a great point too about the resultant depression. It's not natural to basically put all of your friends and family on one bus and watch it go over a cliff, to feel that level of loss and loneliness in one fell swoop. People were given one tool to cope their whole life, the false hope of a panda paradise, and now they have no healthy tools at their disposal so they may escape in unhealthy ways.
Oh, and then there's the shame. You've done something "wrong" and been told that you're a horrible person and since you internalize it this may lead to a self-fulfilling prophecy of sorts. Bad people do bad things.
So you build a model of a person (often a young person) with little education and poor job prospects, no family or friends, no hope, battling depression, often having to make tough decisions quickly and under pressure to survive, who feel like they're inherently bad and that they have to act out to fit into the new world they've been thrust into. The fact that many of us survive and thrive is a minor miracle.