Lets just start with the basic concept of crypto currencies. They were created as a digital medium of exchange but as all new concepts take time, this one also requires some time before the purpose is served.
A digital medium of exchange? Then what difference does Gaypal, ApplePay and others like those have with bitcoin? Bitcoin is decentralized and somewhat anonymous, censorship-resistant. Thats what gives it an upper hand.
We can see countries planning to launch their own crypto currencies and definitely this means we are heading towards an era of crypto coins.
Wrong. People who understand the ideals of a decentralized currency would not go for state government backed coins. They are completely centralized like Ripple and a waste of an investment to make, let alone use any for transaction purpose. If you like them then do as you wish but taking Venezuela as an example would be a biased one since they had an economic collapse without any way to recover from it while other bigger countries are able to recover with time.