I live in one of the largest cities in Finland, and I routinely see people leave their bicycles unlocked in the town center, because bike theft is so rare that most people don't worry about it, or only take minimal precautions.

Meanwhile, in my tiny town in the States bike theft was basically the single most common form of crime, and I know of one house I would walk by every week that would openly have as many as half-a-dozen stolen bikes displayed for sale in their front yard.