Stop going on like "natural" means "perfect". You know what else is "organic"? Poison ivy! And deadly nightshade! And arsenic! And until you are willing to forego all medicine, plumbing, and soap, and accept that your lifespan is "meant" to be no more than 30 or 40 years, I'm not going to buy that we're "meant" to eat the same diet as our hunter-gatherer ancestors.
Part of what makes humans so nifty is our adaptability. Sure, some things are healthier than others, and it's certainly worth studying to figure out what works and what doesn't. But your personal experience, however enlightening, does not automatically extrapolate to the entire human race.