For me there are no doubts that cryptocurrencies will take over the world, not sure about BTC, but it may be considered as a certain technology revolution, innovation, updated version of fiat currency. You may consider this comparison irrelevant, but I see emerging of cryptos similar to emerging of smartphones years ago. Firstly it was just something brand new and trendy, something that gave you new opportunities, and then it turned out that everyone wants to have it, nowadays, can you even imagine going out anywhere without it? At the present day life is impossible without them, same it will be in future with cryptocurrencies.