How to "END UP" cash money? Is it worth it to invest in cryptocurrencies?

People have been predicting the end for physical money for nearly 60 years. With the rise of credit cards, contactless payments and cryptocurrencies like Bitcoin the death knells have only gotten louder.
WHY Physical money has been with us for thousands of years for a reason?

Cash is essentially untraceable, it’s easy to carry, it’s widely accepted and it’s reliable. If the power goes out, or there’s a blip in the electronic systems that make the online commerce world go round, cash is there.

If someone wants to buy something without anybody tracing it back to, cash is the way to do it. If someone wants to be certain that their form of payment will be accepted, cash is the best bet. Even with advances in technology, some of the aspects of cash simply aren’t reproducible with bits just yet.

But eventually the technology is taking us somewhere we still do't know, they used gold and trading stuff long time ago and there is a big chance for electronic wallets soon that would place cash money!

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