Depending on the farm of course, animals can be extremely happy living a domesticated life. For the first 30 years of my life I raised my own beef, those cows o

Depending on the farm of course, animals can be extremely happy living a domesticated life. For the first 30 years of my life I raised my own beef, those cows only stayed fenced in because they didn't feel a need to leave. How do I know this? Because as soon as the field they were in had grass under 4 inches to chew at their leisure they would walk up to a fence and push it right over like it wasn't there, then stand 5 feet over the fence chewing fresh grass until you shooed them back inside. If you weren't on top of rotating pasture you would get home to see them happily chewing the grass in your front yard. They were treated not much different than a dog that eats grass, and had no idea they were food. The worst they knew is sometimes a new calf would appear, sometimes an old cow would be loaded up and drove away. All of them named, although they were mostly on-the-nose, our biggest cow was 2400 pounds and we called him Big Mac. All that said, that is nothing what factory farming is like which is what most people are eating their food from. But there are ways to raise food animals "humanely", we did it for thousands of years up until the industrial revolution because it was the only way we knew how or could manage them. Without solid walls, hefty steel bars, and a cocktail of drugs and antibiotics when disease inevitably infects those overcrowded facilities, it is pretty difficult to keep most animals contained if they aren't happy, domesticated or not.