> why do you get to decide that it isn't the purpose of a cow to be eaten?

Clearly you’ve never experienced the sight of animals in a slaughterhouse, as they realise what is happening to the animals in front and begin to panic and violently bellow and push back.

> You're arguing on the Internet, it's already a waste of time and space.

That is only true for people who don’t engage in good faith and don’t have a genuine desire to learn and are open to changing their minds. For everyone else, it can and does provide value.