I love the dollar coins. Also, I can find hardly any vending machines around here that take them. Just the post office.
Some of the value in the coins, to me, is that you can tell the denomination by the size. I have a family member who is legally blind and often can't tell a 1 from a 10 on paper money and has been ripped off by cashiers more than once. He has to squint to look at the picture on the bill to know which bill he has. That's why the Susan B. Anthony didn't work for him, too close to the size of a quarter. He'll pay with 10 Sacagaweas rather than a 10 dollar bill to avoid been robbed by some crooked clerk.
Coinage is more handicapped-friendly.
StAnn