Hi
I remember in the 40s the world was going to end.... It didn't. There were several other times which likewise... It didn't.
The difference now though is, then, every garden grew food, people kept hens, for eggs and meat, a few people kept the odd pig. When you bought poultry or a rabbit for the table they had fur or feathers on. every home had cooking pots and pans and the skill to use them. I watched a program a while back and kids didn't know that chips came from potatoes, and didn't know that chicken didn't just come from KFC.
If the grid goes down the freezers go off, the microwaves won't work and the electric kettles won't boil, and millions of people will be wringing their hands and going woe is me. the older generation who have the skills will cope, there are people on the American continent, Australia, and Africa, who won't even notice. some people in the UK and on the continent will cope, but the big cities, London, New York, and the likes have two days supply of food in the supermarkets, no diesel or petrol, that isn't in cans, and if your in a town that is in darkness, and you have lights on. How long before someone wonders what else you have.
I think "the world" will not even notice, some people though are going to have a very rough time of it. The debatable point is that bankers and traders will discover life without calculators or phones. Hmmm.
I will continue in my journey through life and will not lose a moments sleep on what may happen.
Brian