Organic food makes sense to people on a visceral level. Pesticides kill bugs. If they kill bugs they must be a kind of poison. Poison is bad to eat. Chemical fertilizers are artificial. Artificial things are bad for eating. GMOs are designed in labs by scientists. Things designed in labs by scientists are unnatural. Unnatural things are bad to eat. Sound reasoning that stubbornly refuses to garner significant, real-world evidence or be supported by those pesky facts.