General doom & gloom reports don't affect me much anymore. I've read them since I was a young person. I had friends who stored hundreds of pounds of wheat in their attics (it went rancid and uneaten). I saw other friends overstock their pantries to the point that they had 5-10 years worth of food in there. Metal cans corroded through. Packaged goods went bad. Most of the food was uneaten. I had a friend who stockpiled army rations he bought from the military surplus-- stock from World War 2. I can't imagine that he any of that crap.
I try to be a realist. I try not to go overboard. So I now grow much of my own food and don't stockpile much more than I need to see me through to the next crop harvest. Since I opted to live in the tropics, I can grow most foods year around. But I do have seasonal items that I store.
So why do I preserve food? Simple......to last until the next harvest.
Why don't I stockpile? Overstocked food will go bad or not get eaten. Waste doesn't sit well with me. And besides, I've read doom & gloom reports for over 50 years. The fear issue loses its affect over the years, especially when the forecast disasters never materialize. Oh, I do believe in being prepared. But I don't get crazy over it.
Will food shortages occur? Of
course, considering our species is insanely over populating this planet and won't stop producing more children. More people = more resources needed, including food. Will food prices go up? Of course, because it's the principle of supply & demand. My own solution is to become as food independent as feasible.