It has been discussed before, but I think it is still a big problem. Most of the world's currencies allow you to buy something with 1.0 units or above. For example, in the US we have these 99 cent stores. Kind of a joke, because most things in there are prices above $1.00 and after taxes are certainly above $1.00.
No, that's not the joke. The joke is that a long time ago, 99 cent stores actually
did sell things for less than dollar,
after tax. For example, I have a first paperback edition of
Biggles Flies West, which is now rather dated by its price tag: 3/6 (that's three shillings and sixpence), or 0.175 pounds sterling. A reprint now costs 6 pounds. In the book, Biggles and company dine at the "Jolly Shipmates" tavern, despite the exorbitant price (a whole shilling, or 0.05 pounds) charged for sausages and mash. Currencies in which you can't get a decent meal for a fraction of a currency unit are something of a novelty, and most people old enough to remember what prices were "back in the day" complain endlessly about how worthless their money has become. I think these people will
welcome Bitcoin.