I think that attempting to create a subjective reality out of what is clearly an objective fact is quite dangerous. In fact, in terms of the lives of animals, it comes down to slaughter, cruelty, exploitation and greed.
Try watching this
PETA TV: Select Your Media Preferences: Meet Your Meat
and tell me how someone could subjectively create a reality which is different from what they actually see.
This video is not extreme. It is an everyday reality for non-human animals.