Is the world ready for cryptocurrency?
I don't really think so. The crypto ecosystem, especially its security and reliability, seems to have certain room for improvement; people, both those in charge and ordinary people need to come to grip with everything it takes; the governments need to develop legislative framework for all of it, etc., etc....
As you might understand, there's a lot that has to be done before the world is ready for cryptocurrency.
Yes, it is great; yes, it is very promising, I know that, but it doesn't necessarily mean the entire world is ready to grasp it.