Morality aside, food in San Francisco physically cannot feed people anywhere else! Personally I try to clean my plate when I eat. But your values may vary, and

Morality aside, food in San Francisco physically cannot feed people anywhere else! Personally I try to clean my plate when I eat. But your values may vary, and as we live in an affluent area, there's no objective reason why you shouldn't toss half your food, if you felt like it. That may be true when you talk of food in its final state - obviously you can't ship your half eaten stale sandwich halfway across the country to feed a hungry child. At a different scale though, by buying food you don't need, but can afford in your affluence, you are driving up the cost of the ingredients for those poorer and in other locations by needlessly reducing supply. Waste by the rich /does/ affect the poor's ability to buy food whether you like it or not.