Absolutely agree, I'm getting quite a collection of medicinal herbs, and home grown, organic vegetables will keep you healthier than any supplements will.
The government doesn't get a look in with our barter system in my town. No money changes hands, so no "authorities" need get involved.
I swap my eggs and vege for things such as olive oil, soap, even books. I swap chicken manure for horse, cow and sheep poo, hay for mulching. I swap kelp chips for home-made paper, the possibilities are endless.