if it wasn't for our carnivorous ancestors, we'd still be living in the trees. The brain requires certain essential fatty acids to function properly that can ONLY be found in meat. And it's sooooo tasty. mmmm steak. I saw this TV programme  in which a well-known athlete  tried a new vegetariarian  regime and his performance dropped like a stone. He said that he felt really weak. The health arguments don't really cut it with me either. All my relatives are meat-eaters and they've all lived well into their 80s