-Digital books and kindles replaced library books
-Regular mail was replaced by email
-Previously, we took actual photos; now we take digital photos
-Digital music replaced cassettes and CDs.
-We switched to direct deposit from cash or checks.
How often do you actually have cash? It's rare that I do! The next item on this list is money.
Then... Buy Bitcoins.
There are some things that can't be replaced easily. Yes there are digital books and Kindles, but there are still libraries being built in schools. They never told students to read digital books. But I do get what you're saying, yes there will be new ways that technology will bring about, but that doesn't mean that the old ways will be completely buried.
It's all about preference when it comes to money. I make use of electronic payment methods, and I also make use of cash. But the majority of the people where I live are making use of cash (paper money) and I'm mainly able to make use of electronic payment methods when buying online and when I go to big stores.