Why should everything have intrinsic value? Why does it have to be useful by itself? Bitcoin can't be useful by itself! It's the harmony of its users that makes it valuable. It's the privacy that provides, it's the freedom. It is useful for the people, not because it's a ledger with transactions. The fact that it's censorship resistant, that no one can re-write the transactions, that everyone agrees upon it. This is value.
Gold has an intrinsic value and I agree that bitcoin doesn't. Bitcoin is valuable, because of the agreement of its users.
Indeed. Bitcoin has intrinsic technological value in its ability to digitize shininess.
If all bitcoins of the world, suddenly disappeared, would anyone noticed it except from those that use it?