BTC is wonderful in all the ways you have listed. And the train comes off the track when the internet gets controlled and major peering points for global traffic are disconnected. Just needs a few governments to collaborate on a coordinate solution, and the global internet that you take for granted today is gone in a poof.

What exactly are the BTCs you have stored in your private wallet good for in that scenario?

Who and how are you transacting the BTC into xxxx? into fiat? How? Into gold or silver? How?