It’s like saying: these are my children, without me they wouldn’t exist, I can subject them to anything and they should be happy that they have existence.

I would argue that no existence is better than existence filled with endless misery, agony and pain.

Factory farms are a disgrace to humanity. It is my opinion that until we develop enough compassion to see this and stop, humans have no hope of creating lasting peace amongst each other. Our morality has a deadly wound at its core, and it’s rotting away at our souls.

I mean you could extend this argument to anything, should we all be procreating all day every day to ensure every possible life is lived? Should dogs be forced to have 10s of litters? Should we encourage insects?

The answer to all of these is obviously no. So why do you make the case for cows?

Yes, they are extremely miserable (look up "factory farming").