The argument for omnivorianism that I find unassailable is that plowing which is required for annuals is actually worse for the environment than ruminant emissions. While utilizing perenials will require ruminants for a truly holistic agriculture that cycles all nutrients efficiently. So a Perennial plant base agriculture with ruminants to hlelp cycle nutrients is the best ag option available, so eating a few a of the ruminants as they age out of the cohort makes sense, and would be wasteful not to do so.
I actively avoid meat in the company cafeteria and at most restaurants, but buy grass-fed beef or a free-range chicken most weekends to cook, or packaged free-range chicken legs if I’m feeling a bit lazy. The price per pound is ridiculous (“why did you spend 15 bucks on a little chicken that looks like a damn mockingbird?”) to my dad, who eats a good half pound of meat every day.
In the end, I probably spend about as much on meat as a less-picky meat eater in Germany does. 1kg free-range chicken legs: 8-10 EUR, 1kg cheapest chicken legs: 2-3 EUR. Two free-range chicken legs weigh about the same as one cheap one.