Obviously Bitcoin has it's real value because it is now the digital currency which is used to make digital transection. So it has real value because we use it as a virtual currency.
Bitcoin is proven to be a good digital medium of transfer so far.
It represents, what a good digital medium of transfer need to do: be available, be secure and be a store of value.
Bitcoin's network has worked very well fo everyone, only a few times, fees were high but are moderate now.
People will use it again.