In the rich world, each of us consumes or uses 30 or more animals a year (the bulk – 52 of the 59 billion – are chickens). We don't, in the nutritional sense, need these animals to feed us – certainly not in those numbers. Yet, in order to eat them at an acceptable price we have to imprison them, alter them genetically and chemically, and kill them. We have moved inexorably into ever greyer ethical territory. Any planning for a food future that still envisages using animal products and meat must debate the "moral cost". I am not sentimental....