Personally I can't comprehend how someone can live without meat, but, if you wish, go for it! That's pretty much my view on the matter...
You see, we Catholics have a certain hierarchy when it comes to living beings.
Plants - they live, they grow, they somehow interact with the world around. That's nice. Also they're food for the rest of creation
Animals - they do not just trade nutrients like plants do, they feel. They're higher than plants, they eat plants. We're allowed to eat them, for we are higher.
Human - the pinnacle of mundane earthly creation, that not only feels, but has free will (we believe plants and animals have a sort of program going on, you see - nature has a set of rules and they are bound to those). We were given this world, we are it's keepers.
We believe that in the dawn of times, when the world was not tainted yet, living beings were not harming each others. And everyone was eating only plants (as stated above, we claim they don't feel, they just trade nutrients with their surroundings). Now that the human has fallen, the perfect order of the world has started to crumble down, too, and we are where we are now.
Oh, after Noah preserved the creation God nerfed humans to 110 years of life and allowed them to consume meat. So yeah, we eat meat too now. Not each other, for that's twisted - human and human are of equal dignity and should treat each other well. Plants don't feel, so we eat them. For animals, we understand them as lower beings than humans, so we can eat them. That doesn't mean we can torment them for fun, oh please no.
I don't want to criticize anyone's view on the matter, nor force you to accept ours. This is just a little insight to our mentality. There are many people, and they're all different, and that's fine! That's how it should be. But we can't come to mutual understanding if we don't learn about the other's views and opinions.
Q'uaksna's trademark incessant babbling, oh well. Hope you did not fall asleep.
And meat is tasty fight me.