Because with all transactions recorded it would become possible and when something becomes possible, oftentimes govts are tempted. As an exemple, where I live t

Because with all transactions recorded it would become possible and when something becomes possible, oftentimes govts are tempted. As an exemple, where I live the govt cross-checks your income tax filing with the automobile registration records and if there is, in their opinion, a discrepancy, you have to explain yourself. Also my comment does not single out Sweden, it is more of a general observation.