I believe it is morally wrong to eat vegetables, since they are the only ones actually producing oxygen, and their own food form sunlight and water. Everyone else in the food chain is a parasite of the poor vegetables, really.
It is also terrible that people eat vegetables while they are still alive (e.g in salads), and that we cut them also while they are still alive.
Fruit and grain are not really an option, since they would be the equivalent of eating foetuses.
I also do not give flowers. Flowers are the sexual organs of palnt kingdom. So it is rude an full of inuendo. Besides, castration is morally reprehensible.
So, for purely moral and ethical reasons I only eat food of animal origin.
Best wishes,
Bernhard.