The "faces" issue: did you know scallops have eyes? Little blue eyes, they are very cute. I can post a photo if anyone wants it for evidence. What elements does one need for a face? Surely cute little blue eyes qualify.
On the "it takes grain to raise livestock" thing. I think this can be confusing. A lot of people do not realize that cattle are not raised in feedlots. They are raised on pasture, or up in the mountains etc. on grasses and forbs. When the steer gets to the feedlot, a significant amount of weight is already there. The feedlot is to *finish* the steer. And of course not all steers go to a feedlot, some are finished on grass. Where I live, the National Forest is leased (generally it's 30 cow/calf pairs to a lease) and the cattle roam the National Forest during some parts of the year. In a way this is good. We used to have very large herds of deer and elk up there but the numbers are nothing like they were before Europeans arrived. Now the cattle take the place of the elk and keep the forest grazed (although admittedly they graze some different species) and help keep the fire hazard down.
What ruminants are really good at doing is taking something that humans can not digest - cellulose - and turning into something that humans can digest - protein. There is a lot of land in the world that is not suitable for raising crops. My land, for example. My land grows weeds and sticks like you would not believe. Alas. I can not eat weeds and sticks. My goats can, though, and therefore produce goat chops and milk and cheese. Those things, I can eat.
I think what a person eats is a personal choice. Hooray for you, whatever you eat. I'm good with it. Eat what you like, and like what you eat. If you want to eat vegetarian, that's awesome. If you are an omnivore, good for you. Personally, I'm sort of like a coyote - as long as it is not poisoned or on fire at the time, I'll eat it.
As for what it is called, that is a little confusing (to me) but again I am not concerned with what other people eat. That is their business.