Because could bitcoin represents a value reserve or acts as a "digital gold", really could it change the world in a deterministic sense?
I believe that is the purpose for Bitcoin , to be a store of value and not cash. But it is not there yet, and there are also a lot of risk in holding Bitcoin. If you buy Bitcoin the rate of its volatility shows that you're giving t be taking a lot of risks, because you can check the next day only to notice that your asset has drastically dropped in value.
So I think for now it is not yet a store of value but it is evolving to become a store value soon. For now we are still going to hold gold in position of being the better option when we talk of a means of storing our values.