I have a few friends trying the sugar-free lifestyle at the moment. All power to them. I won't be offering them any of my homemade marshmallows with three different types of sugar: cane syrup, white sugar and icing sugar!
I have an interesting anthropological Marxist analysis on how sugar was transformed "from a rare foreign luxury to a commonplace necessity of modern life, and how it changed the history of capitalism and industry". Certainly puts a different spin on that teaspoon of sugar in your coffee.