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
Somehow, cash is better than Bitcoin but Bitcoin also have advantages that cannot find on cash. Cash is more secure and traditional compared to Bitcoins. However, if you have cash, it will never change its value what ever happens unlike one Bitcoins. It is very volatile and I guess it was a good thing for the probability of having greater profit.