Also, animals suffer. OK. So what? I believe that the only reason people object to the torturous ways of factory animal farming is because they can sympathize with those kinds of animals, and can imagine what they're going through, and not wishing to go through the same, sometimes out of altruism try to help the animals as well. Lesser organisms don't have the same pain/suffer feedback mechanisms, but I believe that we don't care about them (like small mammals, insects, bacteria which we use for all kinds of purposes, and which suffer/die by the million daily) because we cannot identify with their way of suffering. So with this said, I don't have a problem with efficient plant farming (which includes tremendous death of plants) as I don't have a problem with animal farming, as long as they're fulfilling the purpose of efficient farming, and aren't just for the lols.