a counterargument: lots of farm animals are fed field-grown grains, harvested the same way as everything else
but not all! cows in particular are more likely to eat wild scrub in areas like the american west, where there isnt enough water to support fields
this updates me significantly towards eating cow being generally fine, especially given my problem with meat eating being about the factory conditions rather than meat itself
im fine with killing animals, which also blunts the original argument i guess