[cowl]

That is the natural Conservation of Energy into play. Noone is saying that you get more calories than you put in. But the form of those calories is more useful for our consuption.

I'll take your example: While it takes 25KG of grass/other plant to get 1KG of meat The human body get's much more value from precessing that 1KG of meat than processing 25KG of grass. You can not just eat 25KG of corn plant and expect it to be the same as 1KG of meat.

This is not even a question. The need for Animal Proteins in our body is well documented and although many plants contain various forms of proteins they can not eliminate the need for Animal Proteins. There are various products that try to supplement this need artifically for those who oppose the consuption of animals on Moral grounds but that is another issue because there are also those who have a moral issue with consuming Plants; Why should one have more weight than the other? And this is also Why I am very sceptical of this issue because people try to push other moral views and conflate them into one.

All I care in this context is the enviormental impact. I can say with a clear conscience that I dont care about your other moral dilemas in this case because the issue is much larger than some people needs to self congratulate on their choices and their need to recruit more people into those choice to validate themselves.