We are pretty damn close to cashless already. You can "monetize" many ways without actual cash, called a debit card. Think it through, how far is it from cashless world?

- You get a direct deposit from work - heck, can route to multiple accounts, send to investments etc. - You NEVER actually see cash.
- You use the debit card anywhere at any store
- For personal transactions you can easily use something like Venmo
- Many bills are done 100% on line

bitcoin is a joke, block chain on the other hand is not. It will be the backbone of a cashless world.