For me it has always been obvious humans were not meant to get cavities, crooked teeth, get fat, develop chronic disease, etc. It just doesn't make sense, nature doesn't make mistakes like that. So the question arises: what's the deal? What behavior of ours is causing it?
Obviously one should just obey nature for optimal results. That of course means eating real food. But it wasn't until I heard of paleo and read their reasoning that I grasped the missing piece of the puzzle. The missing piece was: AGRICULTURE is not a real food, as we have not had adequate time to adapt to it. However we have had millions of years to adapt to meat and vegi. Very eye opening. Before I had always thought of brown rice and soy beans as real food.
And so we all have removed agriculture "foods", and all sorts of problems have vanished! Pretty cool. Figuring it out after 10,000 years of dumbass farming, better late than never. We should have noticed when we got 4" shorter, something was wrong.
So I'm just here to enjoy the awesomeness.