While I love our $2 bill, I think it is the handsomest obverse of any bill in the collection, the reason countries do away with smaller bills is inflation. When it takes $2 to buy $1 worth of product, the dollar bill goes away, demoted to coinage.

I would rather not see that happen here. Canada did it when their dollar was buying about 2/3 of what it used to against the US dollar.

Historically, we made paper money to represent denominations which were too cumbersome to carry around as precious metal in our pockets. And it also let the Fed store the metal and issue paper surrogates, to slow the flow of gold and silver across the borders.