It really depends on where you are. There's a lot of businesses around here that have $5 or $10 credit card minimums. So if it's a place like a coffee shop, most people are going to use cash since a cup of coffee doesn't tend to be very expensive.

Regarding buses, I've been in a few different cities that have reloadable cards for frequent travelers, but if you're only using the bus on seldom occasions, you still have to use cash.

But I have to admit, the paper I miss the most is bonds and stocks! It was so much easier to give bonds and stocks as gifts when they were pieces of paper, especially to minors. Now you have to set up electronic trusts and what not. And it feels so much less like a present when you say "I bought you some stock and set up a trust for you. Sorry you don't get to unwrap anything...Happy birthday!"