[CuriouslyC]

Animals are part of ecosystems, and play a role in their health and sustainability. The great plains are fertile farmland in large part because of Bison.

The problem we have is that animal products are more profitable in general than vegetables, so people overproduce them. It's the same thing behind the housing crises we see everywhere - luxury apartments are more profitable than low income housing, so that's the vast majority of what gets produced even though it's not what is needed, and it just fuels speculative buying.