Every one sees cryptocurrency as a means of payment, but I rather see it as store of value. Something like gold or real estates, but it is much better because nobody can steal it, even the political situation change in your country, nobody can take your Bitcoins. Those who lived in communism know what I'm talking about. 
Some people see all crypto-currencies as one, some people see all of them. Future for some crypto-currencies is
promising, while some will fail to develop and become more popular.
We need to choose wisely where to invest money now, there are many good crypto-currencies but just some of them
will go higher and be here in future. It's hard to make difference between good and bad projects, it's why I diversify my
investments and I have many crypto-currencies.