> Is that somehow "smart debt"? Really? What's so smart about it?
Regarding a mortgage and 2 car loans, I'd like to offer a defense of why it's smart / good debt.
The primary reason that your mortgage is considered "good debt" is because the asset you purchase with that debt (your house) will typically appreciate faster than the interest you pay. I'm not including black swan events like the 2008 crisis. When you eventually sell, you'll be in the black.
Regarding car loans, the only type of "smart" car loan is 0% financing. A 0% loan lets you keep your money in your pocket for longer (and in that time, you can invest it however you see fit). 0% loans can be found depending on when you see the dealer. End of the month? Quota wasn't reached yet? Perfect time to negotiate.
I'm certain jaquesm's point is that lots of people get in over their head with their purchases, especially large purchases like homes and vehicles. However, DontBeADick's point has some validity: Taking on debt can allow you to realize further gains than you would have otherwise seen (basic leverage).