[visarga]

Lawyers, yes, but religion also plays a major part.

> "Be fruitful and multiply, and fill the earth, and subdue it; and rule over the fish of the sea and over the birds of the sky, and over every living thing that moves on the earth."

So righteous people felt entitled to exploit animals with no regard to their inner lives, and exploit nature with no concern about the ecological disasters they might cause.

Only now, after we 'multiplied and filled the earth', have come to a point where we can't just ignore ecology, there are limits and constraints we now understand. So we developed new ethics that would help humanity survive.