Why is that worse than the planetary-level ecological disaster that's currently being exacerbated by everyone in the developed world eating a ridiculous amount

Why is that worse than the planetary-level ecological disaster that's currently being exacerbated by everyone in the developed world eating a ridiculous amount of meat? My species also "evolved" to constantly fight wars against everyone not in my family; I'd say it's really good news that we were able to develop moral and conceptual systems to overwhelm our evolutionary tendencies.