...what other uses does it need to have? It does what nothing else can do. That's major intrinsic value. 

Gold can't be sent through electrical wires, because it's physical. Bitcoin HAS to be purely digital to do what it does better than gold. 

What other uses does a pizza have? Pizza is useful as food when you're hungry.  You don't need it for anything else. it has intrinsic value in that it is food. Bitcoin has intrinsic value in that is the first, most proven, purely digital, completely decentralized money. That is value! That is valuable! That is a trait that is needed, that is not fulfilled by any other product. Why do I need it to ALSO be used to fill teeth and make jewelry? I don't personally care that it doesn't have a secondary use.

what is the intrinsic value of a desk lamp? Do use it for anything other than light so you can see? is it not useful or valuable, just because it can't be used for much else? It's utility value is that it makes light. Bitcoin's utility value is that it is money that is not controlled by the govenment, or any one group for that matter, that you don't have to carry in your pocket, yet can still send across the planet quickly.