Yes, we should all be more self suffcient where possible. Quite apart from BREXIT we should be more aware of welfare standards for animals, chemical used on crops, the work taken to produce things, air miles or sea miles..........yes war time food was boring but it was rationed and we had'nt really planned for that. We can plan now.
I think we can provide a lot more of our own things and be on nature's side for a change, we have too much in the 'stuff' dept. and not enough spend on quality foods produced at home.
The planet is scarred by the ways we consume, poor bees worked to death and transported across America in lorries from one crop to the next, we don't need all that we have, as it is our wardrobes are exploding our houses cluttered.
I am sure bananas will get here somehow, but I tire of seeing apples from abroad why transport stuff when the planets suffers from it?
We need to get some quality back into food anyway, time for a re- shape of what we use all round. AND the robots are coming for farming so preserve the skills of the farmers at all costs because only they can make it all humane.