Bitcoin is always better than cash.For our bitcoin earnings,we are not accountable to government and we need not have to pay taxes unless it is legalized in the particular country.With bitcoin,we could easily send huge amounts of money with very low fee at high speed.With bitcoin,our money value increases,but with cash,our money just remains idle.
I agree. However cash is really importang right now because it is what keeps the economy of different countries to be balance and also eases the transactions. Imagine if you are about to transfer BTC every time you buy in the market or store. I mean, it'll be longer. Maybe in the future, BTC will be a good currency. We may not know now but in the future, It may be. 