Pixie; humans were not designed to eat meat. They evolved to eat whatever was available, whether it was plankton, shrimps, mammals, cows, calves, chicks, other humanoids, other humanoid babies.....
I think we shouldn't use our evolutionary history to override other human values we have, such as the 'nice' bits of religions.
NJ doesn't want to be deprived of food that he likes, and implies that he needs meat substitutes. That's up to him. I think that god would say 'Oh, you like killing and eating my creations? Welcome, my son; I love eating them too!!'