I don't mind romans 14:2 telling me I'm weak, as long as the meek inherit the earth, but also because of romans 14:23, that says that if there is any doubt, then don't eat it, because going against your own beliefs is against sin.
proverbs 12:10 says that a good person is kind to their animals while a mean person is cruel.
most factory farms are cruel to their animals. buying such meat and dairy supports cruelty. that is why it is wrong to BUY said meat. however, if you need the nutrients and can't afford better meat...