For those of you who assume I'm only in my job because I want to make lots of money so I can buy lots of nice things...
I left the job I loved primarily because I couldn't buy groceries. I certainly couldn't pay for doctors or make my $300/mo. student loan payments. So while, yes, money motivated me to leave the job, I wasn't interested in buying designer clothes or expensive trinkets for my house so much as I was interested in paying my bills and getting myself healthy.
I didn't have much money when I quit the flight attendant gig, and I didn't have a lot of time to find a new job. When a job with a $45K salary was offered to me, I took it without thinking. I was more concerned with things like taking care of the tooth that was falling out and getting myself into a position where I wasn't relying on credit cards to pay for my basics.
There is an argument out there that people who work in cubes are only there because they want a lot of money and it's their fault for allowing their greed to get in the way of happiness. Those who make that argument, I would argue, have probably never been forced to choose between happiness and paying their bills--and they are among the very lucky few who have never experienced that.