to me, bitcoin is primarily a new method of free and open communication and teleportation of value.
it has special characteristics that allow any human being with the mental faculty to remember (or write down) words to change jurisdictions without restrictions on how much value they can own while moving.
This has never before been possible, and that is, in my opinion, the primary use case.
Also being a great store of value and a potential future standard form of payment is “icing on the cake” when it comes to overall importance to the future of humanity