However, you missed a very important detail. Predators don't grow animals then to eat them. There are many cases when predators feed calves their victims and don't eat them. It sounds funny, but animals are much more humane than humans.
I think we should agree to disagree on that one. If we dive into it we'll be opening a whole new subject and a very complicated one at that, cause yes these animals are grown by humans to be slaughtered and eaten, but they also only exist on this world because of humans. It's a weird topic whether it's better to have been born only to be killed or to have never been born at all. I do agree however that humans are capable of unimaginable atrocities which you won't see in the animal kingdom but we're also capable of the most selfless acts of love and loyalty too. The perks and drawbacks of having sentient minds.