I expect we'll see a similar process with using animals for food. As our scientific knowledge increases, and as our needs increase, synthetic meats will become more and more attractive, eventually leaving us all meat-eaters who do not harvest animals.

Complex systems remind me of a theater set up for a complex play. Hundreds of ropes hang down from the ceiling. Somebody is always pleading us with us to pull rope A to make B happen.

Very rarely does pulling rope A actually make B happen (and nothing else) But we still like thinking things are simple like that.