We aren’t though. Protien is required but it takes a lot of energy to break it down and use it, thus why carbs and fats are also important. Look up Rabbit Starvation diet.
100% agreed, I should have been more clear. fatty red meat is optimal. we are lipovores and work best eating mostly fat.
We also have a VERY long digestive tract compared to actual carnivores, because we evolved to digest grains and fiberous materials.
We have discussed the digestive tract issues before: https://discuss.online/post/40918220