Reinforcing my thoughts over the past decade and a half, I've read a few things recently that say that Yes, Money Is An Illusion. It's hard to carry change for a goat.
Money just is a way of keeping the tempo, it's not the tune.
That and, economically speaking, things are diving hard, fast, and it won't be long before we hit the metaphorical ground. I really should read up about barter economics.
Environmental collapse, global war... I think these things I can deal with. Economic collapse might be a problem. I'm not worried about the money side of things, but the human - if things got as bad as 1920s Germany, would I be able to protect the food crops I'm growing, the chickens, the cows, and so on from people wandering about looking for a meal? When a mob doesn't care that it's a milk cow, how do you stop them ripping it apart with their bare hands for meat? What good are chickens laying eggs, when all people can see is the meal from the chicken?
Can you refuse people food, just so that you have enough to eat for yourself? I will have to investigate a few other potential crops, things that don't look obvious. I will also have to get things like bags of flour, honey, salt... Growing your own sounds easy, but I'm learning that it isn't. Fortunately, I have some time to establish food trees. I don't know for how long, though...