Completely agree about the bartering....that's why I've encouraged my kids to learn a trade/skill. It's also why I have spent every waking hour for past 4 years learning how to be self sufficient. Before the past 4 years, I killed every plant I randomly tried to grow. I certainly never "gardened" before..... Never knew how to do things like make my own soap, shampoo, toothpaste, etc. Didn't know how to properly store food long term, etc (with or without electricity).
So what drove my obsession with this? Well, I've worked with critical infrastructure preparedness and disaster recovery for the past 10 yrs. I've been through so many drills, table top exercises, and planning sessions that I've lost count. My personal background has been in utilities, healthcare, and financial industries so those are the infrastructure systems I know the best. Anyway, about 6 or 7 years ago, I participated in a meeting with several ABC agencies about EMP preparedness. That's when I learned that North Korea actually has 2 satellites positioned over the US that could deliver an EMP at any time they choose. After learning this rather concerning fact, we spent 1-2 hours discussing the domino effect fallout if one were ever to be triggered. Let's just say it was extremely concerning.....and that is when I decided I needed to learn how to live as if I lived in 1715 instead of 2015.