Old money like golds or paper money is really bad for now. Hard to carry , easy to steal , too big. But with digital money like Bitcoin or Etherum with their advances, easy to hold , easy to use in payment, limited nothing can fake. So next generation money is digital money!
It's time to wake up, Mr. Freeman
Do you have any difficulties carrying a payment card in your pocket or wallet? Or is it too big? It can be easily stolen (or just lost), of course, but not the money which you can use via this card (if you take a few simple precautions, naturally). Once your bitcoins get stolen, you can safely kiss them goodbye, but this is very often not the case with the money stolen from your bank account. Now let's proceed to the ease of payment. I guess you should try paying with plastic at cashier's to really see the difference (instead of waiting hours till your Bitcoin transaction gets finally confirmed)