My belief is that we are designed to eat flesh. People have the moral problems since they no longer are involved with the process of killing the animals.
Now I do believe that the animals we raise for our consumption should be treated in a humane way, and also killed in a humane way.
But for millennia we have been killing and eating animals in a very inhumane way, just to live. And if you look at nature, it is a very brutal place. Spend a few minutes watching animals hunting on Animal Planet, National Geographic, or any of the science channels, and you will see animals being killed in very inhumane ways that are very successful for the hunters.
Animals are injured so they will bleed, and will be followed until they are too weak from blood loss.
Alligators will clamp on, and spin ripping a prey to shreds. Snakes eat animals alive.
I have watched shows where cats are being prepared for a meal, and since I do have a different relationship with cats then I do for other animals, I do have feelings about the situation. But I also know that there are plenty of animals being treated the same.
Then there are plenty of humans suffering right now. People who do not have food, have a terrible disease, or as a result of a disaster.
There is so much suffering in the world, to actually think about it would be absolutely depressing. If we cry for one, should we not cry for all? (Sorry, got a little poetic there.)
The point is that we should strive to make things better, but try not to get too emotional over negative things.
Do not spend your time upset over things you have little control over when you can enjoy life. Just make sure by the time you leave it, it is a better place because you were in it.
(You know, I ended this post completely different from where I thought I would when I started writing it.)