It also allows for a long conversation with an Italian artisanal beer-maker whom you didn't expect to meet; or a diversion to answer the question "See the castle icon on this roadside map? What is that?" Or just an afternoon of people-watching at a street-side patio bar.
The possibilities are endless. Our years of travel has taught us that these unique experiences pop up all the time if you let them; and we find them to be much more satisfying and memorable than rushing from one checklist location to the next. It's just a different mind-set, a different concept of how and why to travel.