RAV KOOK ON Noah Part 1: Permission to Eat Meat

After God destroyed His world by water, making a fresh start with Noah and his family, God told Noah, “Every moving thing that lives shall be food for you. Like plant vegetation [which I permitted to Adam], I have now given you everything. ... Only of the blood of your own lives will I demand an account.” (Gen. 9:3,5) Up until this point, humanity was expected to be vegetarian. But after Noah and his family left the ark, God allowed them to eat everything — except other people. Why was permission to eat animals given at this time?