People can aquire a taste for chocolate that has no sugar added to it? Why would anyone wanna?
Well, they did add sugar, it seems.
In the New World, chocolate was consumed in a bitter, spicy drink called xocoatl, and was often flavored with vanilla, chile pepper, and achiote (known today as annatto). Xocoatl was believed to fight fatigue, a belief that is probably attributable to the theobromine content. Other chocolate drinks combined it with such edibles as maize starch paste (which acts as an emulsifier and thickener), various fruits, and honey. —http://en.wikipedia.org/wiki/Chocolate