Gosh, this thread is disgusting.
Comparing animals to machines? They are living beings for God's sake. They feel just the way we do. But I see we are getting all cold and scientific here, so I am going to jump in that bandwagon. What makes you any different than that animal, specially since we have evolved from many of this creatures ourselves. We share so many similar characteristics it does not mean we are any more valuable or more "different", just wait until the next species arises or till an atomic bomb falls and all you see is roaches, so I am guessing roaches are superior in that sense?. Animals are not things we just program they come with innate intelligence and qualities that may not match our own but are nevertheless valuable and hold a purpose in this world. I am not saying that perhaps the consumption of meat is wrong(though I heavily question it due to the possible alternatives), but killing for such selfish purposes just to fit your wants(note wants not needs) is purely inhumane and unnecessary. I once read a story by Mark Twain, it was about how we call other animals irrational when in reality we don't notice our own irrational way of thinking. Most animals do not kill for pleasure, humans do. Most animals do not fight over silly things like religious background and learn to adapt, we don't. Most animals consume only the amount of food they truly need, we don't. It all seems to me that us humans can be seen as less valuable than some of this animals you claim to be "superior" to.