What are the reasons, why people use Cash or Credit Cards / ATM / Banks?
* Work offline 100%
* No fees.
* Accepted for Food Shopping & Micropayments
* 0 confermations time
* 0 exchange risks
* anyone is able to understanding of the value of payment
All those are true, but inflation is the enemy of cash. Seems like people don't understand what inflation is, but it basically means every day your cash drops in value.
So lesson #1, dont hold cash!