How did someone say? To kill someone, cut off his head and build a nice vase out of it is called culture. To have to go to prison for it is called civilization.
Besides that, raising animals for meat is terrible energy inefficient.
Given the existence of delicious foods not made of meat, the difference is one of law, and of which of the major world religions' ethical norms you follow.
Well now that you've clearly stated that this is a religious issue for you, I see little opportunity in actually having a protective conversation. Have a great day.
Raising animals for meat is not energy inefficient. Those cows control the grasses and help with natural succession of trees and shrubs, while fertilizing the soil and providing nutrients for many animals. It costs literally nothing to leave a cow in a field, and it makes the field better.
What's energy inefficient is trying to grow a thousand cows in a feedlot.