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. 
People can still steal your bitcoin if you only carelessly give in yourself to the errors that can possibly harm you the holder. We have heard series of hacks around the industry and nothing like "nobody can steal your bitcoin". The simple truth is " nobody has access to your privacy when you have done the needful with bitcoin or other cryptocurrency". Frankly speaking, I look at cryptocurrency as a store of value and also as a means of payment, this be that, most of my investment are also for making payment when I purchase items online.