He's eating the meat... I fail to see the problem?

You kill vegetables every day. Every. Day. Until you can feed yourself without killing even an insect or a bacterium, let's pack away the judgment, ok?

At this point the usual response is something about "But...Plants..."
So...what's the difference? One doesn't seem to move or make noise? You still have to murder and steal the life force of another entity to prolong yours.