I guess there is a possibility. If as a species we continue destroying eachother, there might come the time, as it hs been repeatedly portrayed in sci-fi literature, that we will destroy all technology and go back to cave town. Then, what would be the point of cryptos if we won't even have a computer or cell phone to make it work. There won't be even food, etc.
That's not a far-fetched scenario. Either we do it ourselves or nature may pull some strings and help us a little
wow, well... Obviously I did not push my mental experiment that far, but of course.. you are very right my friend.
It's easy to be pushed that far when you are in fatalistic mode. I really want to believe that we can make it pass our vices, but every day i wake up with news that say otherwise.