Are we "meant" to drink milk? No other mammal, after all, drinks milk after infancy, and certainly not another species' milk. Are we "meant" to eat cake? Bonobos and chimpanzees don't eat cake, and they're our nearest living relatives. But we are not bonobos nor, for that matter, any other mammal.
The world is overflowing with great, healthy food, and unappetizing hippie gruel just makes convincing people to try it unnecessarily difficult.