I respectfully disagree, it still introduces a lot of unnecessary friction. Being in a Czech supermarket, for example, is confusing, because I don’t instantly k

I respectfully disagree, it still introduces a lot of unnecessary friction. Being in a Czech supermarket, for example, is confusing, because I don’t instantly know what “79” means, or whether “279” is cheap or expensive. The exchange rate is awkward for mental calculation (22.5 to a dollar). I could convert with my phone, but for a big shop where you’re buying dozens of things, that’s impractical. Euros would reduce the cognitive load of travel and business considerably.