I too hate coins. The best feature of the USA is the 1 USD bill, it is the best monetary invention ever. I wish we had a 1 EUR banknote in Europe. Enough reason to always pay by card in Europe, just to avoid coins. The worst is the UK, with the 1 GBP coin which is very thick and weighs a ton.

Thread relevant response: Unfortunately, when paying by card, it is easier to freely choose the tip amount, no need to round up just to avoid coins. So probably waiters lose this way, and they should lobby for a 1 monetary unit banknote in their country to get better tips ;-)