Earlier quoted context omitted.
Hint: you do not need to eat any meat to get plenty of protein.
That's not a "hint", meat is a desirable food, a very good source of protein, can be a good income for poor farmers and can be raised in places that aren't suitable for cropping. But even if you set aside meat, modern lifestyles necessitate the killing of other life. Take your protein-rich plant food, for example. Do you know how modern cereal and vegetable farming is carried out? The idea is basically to create a ho…
If the option is eating cows that eat some grass and feed from a couple of acres of desolation vs. eating beans and grains from a quarter acre of desolation, then the option is obvious. You can still eat the tenth of the cows that can survive on the grass alone.
Reducing the desolation and increasing the yield by building an ecosystem rather than monocrop is better, but that is a harder transition.