There are potential long term issues with GM crops, but so far none of the fears of crazy allergies have really born fruit.

Something people don't think about in the US is the use by dates. Most of us let them slip by for a bit, but restaurants and food services can not, nor can they usually fridge the left overs after service. A lot of food shelves and soup kitchens could use "recycled food", which isn't the same as dumpster diving. And it comes under "good samaritan" guidelines at the federal level, so it is safe. But if you call it "recycled food", people freak out- the same people who would eat a t-bone that has been sitting in their fridge for two weeks after purchasing. In the past I've had to use soup kitchens a few times- I honestly didn't care.

Same thing- people get funny about what goes in their mouth. Pride is a part of it.