The way I see it, way too much of the world's economy has been a house of cards, and waaayy too much of it has been smoke and mirrors.
There are compaines that make lots of money every year, simply by speculating on other compaines' fortunes, without producing a single thing. Now maybe that's something that can work on a small scale and/or in the short term, but when you build layer upon layer of such 'businesses', then the whole thing is bound to fail. You end up with lots of people and lots of money being based on nothing tangible, so when we hit a speed bump, they all fall apart.
And I am repulsed by the fundamental notion that we need economic growth to survive. Amongst other things, it forces population growth, which simply cannot be sustainable indefinitely.
It's also why the western world has been so desperate to empower "those stinkin' commies" in China.
Would our lives really be that much worse if we lived simpler lives, where new cars and big screen TVs took a back seat to spending time with the family?
In my life time, I've watched how we (collectively) have become so much more materialistic, and so much less happy for it. I've spent a lot of the last dozen years blaming lil' Johnny for it, but I now suspect that he was only responding to, and encouraging a sentiment that was already there.
And the last recession was a similar deal: We all got too greedy and then we discovered that we were only rich for as long as everyone else thought that they were rich too - its almost like a bunch of kids imagining that they're astronauts or sometihng - while everyone is playing the game, its fun and it works. But as soon as one kid says "Uh, my mum wants me home for dinner" then the whole thing falls apart.