Cash is very easy to use.Bitcoin and its ilk will only be useful for transactions that require privacy and also as a risky alternative investment.The volatility of bitcoin's exchange rates is far greater than any other currencies or money-like commodity. cash has no transaction fees.
Usage of the cash may be good option for you as of now but once all the Governments implement the digitization and digital currency in future. Therefore, that time you will definitely will push towards bitcoin or any other digital currency.