Sorry Europe and Canada, $1 and $2 coins are just absolutely terrible. I never want to have to think about where my change is. Bills are much lighter than coins and stack with the rest of the bills.
When I was in Japan everything was all-cash and the smallest bill was the equivalent of a $10, with equivalents to $1 and $5 coins being in common circulation. Most wallets they sold/people had had a coin pocket to account for this.
