Well you did such a good job guessing something out of the blue, I figured you were the creative sort.
This is the science forum, not the ethics forum. So to make it brief and avoid derail....most societies do not consider the death of domestic animals raised for food to be unethical. Although quite a few societies do consider the treatment of domestic animals while still alive to be an ethical concern.
There is a very scientific reason for this. Humans are omnivorous. That is our biological niche. We are apex omnivorous predators. Therefore there is no ethical problem with eating animals for food. But we are also highly social empathic creatures, and torturing any animal is to be abhorred!
I would have a definite problem with people eating higher primates, dolphins, etc. Just because we're an "apex predator" doesn't give us carte blanche to eat every animal on Earth.