Modelled estimates of the environmental impact of dietary choices often fail to reflect true dietary practice. This study links a dietary dataset from 55,000 UK consumers with food-level data on GHG emissions, land use, water use, eutrophication and biodiversity to compare the environmental burden of different levels of meat consumption.
I completely agree, but (most) people don’t eat meat to survive. They do it for cultural and personal reasons which are often beyond negotiation.
Personally, I’m vegetarian for strictly environmental reasons. But I realize I’m a minority, and vegans are a minority within a minority.
And since not even able to wean off my wife off meat, I do not believe that vegans preaching can make humanity completely abandon animal products.