@Frondeur @ahelwer Maybe, but again it's cyclical. They're just pulling crude out of the ground and funneling it into the cows right? They finish with grains because it gives the beef less of a gamey taste. Grains are a grass, and what I just mentioned about grass further reinforces my point. Let's look into the logic here:
>harvesting and transporting the grain to the processor, market, cow.
This would be done anyway with human instead of cows receiving cereals. The difference is that cows, as animals, add one step in between, meaning a large loss of net efficiency from total calories in to total edible calories. Internet says it's about 2.5 lbs of grain to produce 1.0 lb of beef. We still have the unspoken aspects here, which is that pasture grass serves environmental purposes— prevents soil erosion, aeration via roots, and ecological aspects of grass being able to grow in places where other cereal grains cannot. Furthermore, cows provide fertilizer, and the traditional method of rotating fields means a pasture, which even a lot of modern cows use as primary food for the majority of their life, could be naturally fertilized by grazing animals and plowed and used in future seasons. This is very sustainable, which is why it was done without factories since before written records. There's additional nutritional factors like essential amino acids (not able to be produced by the body itself) easily found in animal flesh. It becomes even more clear when you switch to smaller animals like sheep or chickens.
>Slaughtering transport
As opposed to transport of soy meal to the Soylent plant? Again, this is a critique of industry masquerading as a critique of eating meat.
>Methane in farts
Inconsequential and also results naturally from the decaying of any organic matter. We notice it in cows because they're ruminators who are actually capable of breaking down cellulose-b in their gut, unlike humans who are omnivores and have to objectively tryhard to eat vegetarian, so the concentrated release is detectable. Meanwhile any animal which eats any plant matter will do the same thing either in its gut or in the sewer and soil. Foolish.