Most of the time they go through extreme stress [..], and all other types of physical abuse.

But those are all things that can be avoided with better rules and supervision!? I don't know why you're pretending there aren't any farms who make it as easy for the live-stock as possible, especially when thing like castration without anesthesia are ruled illegal in many countries.

Because they don't have the capacity to understand human languages? Also, lions are carnivores, you are not.

Well we're omnivores, we eat everything. And it seems that I don't understand your language either.

Inhaling CO2 instead of oxygen makes you suffocate.

So do they die due to a lack of oxygen or do they die because of a lack of blood in their system?

It would be helpful if you read the part I quoted before answering me. You said you buy meat where the standards are higher. Grocery stores get meat from factory farms.

Where you from? Also, where do you get your food from? What do you think of Helium as a way to kill animals? Why don't answer those question at all? Maybe your life style turns out to be so fascinating that you convince me to do the same?