Cash is better than bitcoin because it is way easier to use, i mean it is true that poeple all over thye world are using internet and smart phones and we are going toward a more and more digital world, but that does not ignore the fact that reaching out to your poclet and gettting a dollar bill is mich easier than pulling out your phone trying to figure out the amount that you need to send and conferming the transaction.
i think we should not compare cash and bitcoin, because currently we are using bitcoin for online purpose and for trading, while cash is using only for payment. and if we still compare both i will say that bitcoin is more better than cash which is really giving us more opportunities of earning, even simply by holding it its value increase and give us good profit. therefore to me i think bitcoin is more better than cash.