Back in humanity's hunter-gatherer days, you only ate meat if you'd recently made a kill, which required a huge amount of effort, and was therefore relatively rare. There's a reason humans only have one set of incisors to rip our meat apart: we're not supposed to eat the stuff at every meal.
We rip out a perfectly good kitchen worth thousands of pounds, only to replace it with another costing roughly the same. The old one has to be disposed of, the new one had to be made. From raw materials, factory processes and transportation the extra effort is substantial. Overcomplication.