Is it ethical to eat as much as most Americans do of something that does as much harm to our environment as the industrial production of meat? I don’t think it is. It’s funny though how much more a lot of people mind hearing that we should eat a lot less meat than they do that, say, we should cut back on consumption of fossil fuels, or use less water during water shortages. (Both of which problems, actually, are highly exacerbated by meat consumption.)
Btw, there’s lots more bbs discussion of the ethics and effects of meat consumption here: