You assume there’s lots of chemicals, but did you check? The process of canning food doesn’t necessarily require a lot of chemicals: a lot of canned food is cooked in the can, after it’s sealed, which kills most of the microbes that might spoil the food and make you sick. And because it’s sealed, no microbes can get in, either.
All those comments, and only you knew what was really up? People really do treasure their ignorance…