I've seen this conversation on a few threads before. To some degree, it's cultural and generational. Also, some of us have lived through times when there wasn't enough food -- or not enough money for food. I remember one time years ago making lentil soup for my family because we had a bag of lentils and a can of stewed tomatoes, and that's it. We didn't have any other food in the house, and no money to buy more. It was a long time ago, and I'm very grateful that things aren't like that anymore. So, wasting food is bound to bother some of us more than others. And yes, food is thrown away every single day, tons and tons of food. We can't mail it to starving children on the other side of the world, but it would be nice if it wasn't against the rules to give our desserts or extra credits to the family at the next table that scrimped and saved for years to afford their trip and is on a really tight food budget, but unfortunately, credits can't be transferred.
We have to find new ways to use more agricultural products in general -- like perfecting efficient ways to manufacture ethanol from corn. And look at all the useful products that can be made from hemp!