Vegetarians vs. Christianity

Well, because I am a Christian, I believe that humans are superior to animals, we are not equals. We are called to be humane toward animals and to treat them with respect since they are part of God's creation, but at the same time, they are here on earth for our use. And part of that use is nutritional. If animals weren't killed, we would have cows, chickens, and turkeys running rampant on the streets! We not only need to eat them for our own health, but also to keep a balance of animals on this planet. I do think there are humane ways to kill an animal, and I don't think we should do it just for fun, there should be purpose to it. But we are way more intelligent and are in no way equal to them.