It is funny when the average person thinks about prepping, they think most people are prepping for the Apocolypse. That could not be further from the truth. Most people who prep are more interested in having what they need in case of a storm or a job loss or a fire or some other incident that might make it hard to get supplies, food and utilities.
If there was an Apocolypse and you wanted to prep for it, you would have a problem collecting food that will last more than a few years. An Apocolypse usually means forever or at least decades. Most canned foods have an expiration date that is only 2-3 years out. They might last longer than that but do you want to take the risk?
If you want to survive indefinitely, you want to have a garden and farm animals that will procreate, a homestead that will feed itself. If you can make that happen , and you build a way to protect that homestead you might be ready for the end of the world as we know it.