people who for very silly reasons want to market prepared food products without preservatives in them who then discover why we started putting preservatives in prepared food products in the first place (because without a preservation method food quickly grows stale, and frequently also moldy or downright toxic) is a consistently good bit. like people really seem to think we put Evil Chemicals in food on purpose for no reason.
I used to work at a wholesale bakery that specialized in "clean label" products and this was my pet peeve. A company would want our products because they didn't have preservatives, but then there were many versions of the following conversation:
"This bread is moldy in 5 days!"
- Yeah, it doesn't have any preservatives. That'll happen.
"But the other company's bread lasted for 15 days without mold."
- Right. They put calpro in it, which inhibits mold. You wanted bread without calpro, so it's going to get moldy faster.
"Well, it has to be preservative free! But we want it to still last 15 days."