One thing that made Gold and fiat currency have real value is that Gold and fiat currency is a believe system that works, so when you compare this two things with Bitcoin , tell me why will Bitcoin not have real value even when it's even more transparent than fiat currency today in the sense that we know how many number of Bitcoin that will be in circulation while for that of fiat they keep printing almost that's printed almost everytime .
you have to understand is that Bitcoin has already exhibited some characteristics of Gold and fiat currency and even more qualities , so when an asset Such as Bitcoin has shown such qualities Such as
a)security,
b)store of value, 
c)inflation hedge that made Gold and fiat currencies become valuable today , So why won't bitcoin also have a real value?.
So in my view this is why I will say that Bitcoin has real value and worth investing in.