Things happening have nothing to do with intentions. Your implication of milk is not intended to be consumed by humans doesn’t track with the history either. We consume milk a fuck ton in various forms over hundreds of years.
Of course it tracks - You think that breast milk produced by cows and goats for baby cows and goats specifically is intended for human consumption? No, of course not. That animal breast milk is intended for the young of that species.
Humans may continue to suckle at the teats of other animals, and it may continue to be common, and it will be weird.
That just brings back the question of how’s cow meat is intended to be eaten by you. That muscle is intended to let the cow walk and eat and reproduce. It is specifically evolved for those purposes.
I don’t think I have the time or inclination to explain the entire history of predator and prey to you, but if you type in those two words, you’re going to learn a whole lot about a very long history of carnivores and omnivores eating meat.
Carnivores are meat eaters and omnivores eat many things, btw.
Humans as a predator, are biologically and historically intended to eat prey, the cow. Or pig, or whatever animal.
Look it up, you can choose nearly any animal you are familiar with, and they will fit into the food chain somewhere as an iteration of predator or prey.
You have a lot to learn, that’ll be fun for you!