I’ve seen this question asked time and time again, and it makes no sense to me. People commit suicide out of (often transient) emotional pain, and less frequently out of physical pain. If we who have the capability to envision a better future decide to opt out of suffering via death, why do you imagine that a chronically-suffering animal’s life is better than not facing that suffering in the first place?
I don't think most farm animals are suffering through their entire life. They seem pretty all right to me. Factory chicken farms should be banned but not all meat.
Small farms are a different story and a mixed bag.
Yes, without question.