I'm impressed that most of the posters were not fazed, although Scrapr's post reflects the microeconomic reality at the ground level.
I had a secure job. But I had experienced the beginning of the Southwest Savings and Loan Crash in '90, then moved back to Houston from Cali just before the Cali real estate "recession" in the late 80's/90's, so my own experience in '96 was to suspect, oh, sh** this could be a national Real Estate crisis. So I reduced stock mutuals from 95% to 60% from '05 to early '08, buying intermediate treasury funds and cash gradually, and with stock mutual gains. The gains were such that I had to keep buying bonds/cash even though I didn't really want them.
I was also about to turn 50 so that also was a huge factor.
Did I feel good when the crash that I feared actually happened?
No, but it did diminish the damage--significantly. I also rebalanced back into stock funds in late '08, '09, and early 10, not so much with the cash but more with new contributions.
Basically, actions before '08 and buying in late '09 and '10 paved the way for semi-retirement in '15.
It was a brutal time, and much more for the lower income workers in the US, many of whom never recovered.
I was lucky. I'm not sure if the stock "boom" had continued for another year or two if I would have persisted in what seemed a rather severe reallocation I started in late '05 and continued through '07 (I sold stock mutual gains gradually.)
My wife worked for Dynegy in the early 2000s during the Enron bust, so that also factored. In her case, all matching 401k contributions had to be in company stock that she couldn't sell (this is an important point that was changed post-Enron), and I watched helplessly through the Enron bust (Dynegy bought Enron's pipeline and was dragged down into bankruptcy as well.) I had told her we should buy options against her stock while it was in the rocket to the moon mode. It was an important lesson in risk assessment and diversification.
I have been scrupulously scraping gains over the last 3 years, even though I don't think conditions are anywhere similar to '07 or '00 (tech).
Just keeping the allocation and enough cash to maintain through a correction until SS kicks in.