Cows and chickens are raised to be eaten, dumbass.
Nobody's equal.
Not everybody has the same potential.
So if your not going to suceed as much as a doctor lets just loving kill you and eat you, also it would be totally fair to choose you as our les-superior to raise you just get loving killed and then eaten and turned into stuff.
Who the hell keeps a cow as a pet? Well chickens are bad ass but still. We've got plenty of 'em.
We have plenty of cats, dogs, and humans why not kill them and eat them?