To the idea that livestock animals have more purpose, it's not just regenerative agriculture or a self-sustaining farm between livestock and crops, but animal byproducts are spread throughout so many of our daily products. What they give back (manure) is the backbone for our crops and their bones, blood (plasma), unwanted organs, fat, are distributed from glue, dog food, medical research (auger broth), and medicines. Without the demand of meat, we will have a shortage for all of those other necessary supplies and materials. And if we attempt to have farms solely for those materials, then we'll have excess meat. If anything, with certain populations growing, some populations may require this "lab-grown" mean moreso than others than making the near 100% switch.