Only human arrogance allows us to think that we are not meant to be eaten. If you think about the natural role of preagrarian man, we were largely savager-gatherers, which places our ancestors well below the superpredators in the food web. Add to that our slow speed and total lack of natural defenses, and the following statement seems logically inevitable:

HUMANS == CAT FOOD

That statement would still be really obvious today if we hadn't killed off most of the superpredators in our environment. Of course everyone will get eaten someday, if not by cats, wolves, or Komoto dragons, then by rats, worms or bacteria. Its only a matter of time before you get shuffled around in the carbon cycle. So really, "If people weren't meant to be eaten, they wouldn't be made of meat!" makes a lot of sense.