Humans don't want to eat "feed." Most, anyways. And we've had this discussion before. To replace meat with a plant based diet you're going to have to grow a heck of a lot more crops. What happens when we have crop failures due to drought? Mass starvation? Can't back it up with meat, you got rid of it. And you can store meat in freezers longer. To get produce to supermarkets you have to pick before ripeness. I love fresh produce but not a fan of canned, frozen, or picked too early produce. I'll eat it, but if it isn't fresh you really lose something .