I have no idea how you do your shopping and end up not getting a pool of useless 1/5 cent coins. People literally laugh you in the face if you try to purchase things with them. Your only option is to give them away or collect them in a jar.
And needing to constantly go to ATMs just to keep notes on you is kind of ridiculous.
However I've also been to card only restaurants in Sweden when the card network was down. There was no plan B, the payment interaction just fell apart.