Eating meat is totally inefficient, and in a world of desperate starvation and malnutrition, it is also criminal and immoral.
Do you agree (the article above may help)? You might take the view that vegetarianism is 'supra-moral' - good if you DO do it, but not bad if you don't - or you may feel it is morally fine to eat meat - and somehow wrong not to? Or you may agree with quote above...
Of course the implication above is that eating meat is wrong due to the consequences for humans... It seems to ignore the moral status of animals, if they have any..