> There’s a big difference between growing part of your own food and buying it.

Because if you grow your own food you have to worry about storage? You are right that, while not impossible to overcome – our ancestors managed, is not the easiest problem to deal with. Especially if you like variety in your diet.

That's why I, a farmer, don't (knowingly) eat the food I grow. It is a lot easier to exchange the food for an IOU. Then, later, when I'm hungry, I can return the IOU for food. Someone who specializes in food storage can do a much better job than I can. Let them deal with it. My expertise is in growing the food.

What is even the point of growing part of your own food? I'd at least have some understanding of being fully reliant on your own food if you fear a zombie apocalypse or something, but if you remain dependent on others anyway, what have you gained? If it is that you enjoy the process of growing food like I do, you may as well become a farmer and sell the product.

> not wanting to communicate with anyone.

Want and need a very different concepts.