Probably the nicest expresso place I ever tried when I was in Italy was in Bologna. Unlike most places that just make expresso from the one blend they stock, this place had a dozen or more coffees to choose from. You pick, and then they grind and make the expresso. On the counter they had every kind of sweetener you could imagine - multiple kinds of sugars, honey, agave syrup, simple syrup, and another one or two I can't remember. I'm guessing a whole lot of their customers use sweetener in their expresso.