> I ended up just cutting out farmed meat in the end. As far as meat goes, I can eat what I kill. Apart from if someone has already got me food and didn't know, as to turn that down seems both a waste and kind of rude.

Pretty common rule for mendicant Buddhists, as I understand it. No meat is the general rule, but if you go a-begging and someone gives you meat, and you don't have reason to believe they killed something (or had someone else kill something) specifically for you, then you're good to eat it (or even obligated to).

To expand on your point, Theravada Buddhism allows monks to consume meat with those caveats.