Sometimes you game the system, sometimes the system games you, as brought out in the article. If you have the golden key for gaming the system that everyone can use, post a thread and get it stickied.
On the subject of housing, I could pay off my house, but I usually make more in investments than I pay in interest on the house. So there's a net gain. But if I suddenly can't pay for the house, my equity gets flushed. That's the risk.
On a side note, we got a quote for health insurance that's more than our house payment (60% increase from last year). We've made other arrangements, but I don't know where to file that outrage. I foresee people not being able to pay their car lease payments, or worse.......