Anyway, honey has a higher concentration of fructose so it has a lower GI than table sugar, but this difference is quite moderate (a few percent) - it seems to get overstated a lot on the web. Honey is basically refined/processed fuel produced by bees - and on evolutionary time scales it has been in use by humans about the same as sugar. Don’t get me wrong, it has chemical and physical properties that make it a beneficial sugar alternative - probably most of which is earlier satiety and therefore less consumption. If consumed in similar quantities it’s still going to make you fat. TANSTAAFL.
My grandparents are probably older than average... but the life expectancy was a fair bit shorter just 100 years ago. Most didn’t even get the opportunity to live long enough to have gastric cancer (smoked meats) or a second MI.
This is baseless nostalgia, not something to base health advice on.
Wild varieties of wheat doesn't have nearly as much gluten, and the higher concentration results in a lot more children (myself being one of them) reacting to the protein with an immune disorder(celiac disease).
So you can't just say "sugar bad, flour good" as if it was a binary decision. Everything has consequences on different levels.
I would not take paleo food as a reference, but rather look toward what our grandparents had for lunch when they were kids. I don't think they were doing so badly.
And I don't cook like Bocuse everyday, the five mother sauces are not intended to be eaten on a daily basis :-)