> $1 and $2 coins in wide circulation (instead of worn-out $1 bills).
This has its own pros/cons...
One advantage of $1 bill over coin is the majority of people in US don't need a wallet with zipper to hold coins. Five $1 bills is much less bulky and much lighter than five $1 CAD or five 1€ coins
I would contend that 5 bills are more bulky than 5 coins. The only upside of dealing with US bills when travelling in the US is that you feel like a millionaire when you pull out the massive wad of bills from your pocket.
This has its own pros/cons...
One advantage of $1 bill over coin is the majority of people in US don't need a wallet with zipper to hold coins. Five $1 bills is much less bulky and much lighter than five $1 CAD or five 1€ coins