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
I guess because it works offline and it is accepted food, shopping, micropayments and other stuffs that used via cash. and cash is been use through ages and bitcoin is still not known by other peoples.