You are conflating the philosophical notion of identity with functional identification in the real world. There is no cryptographic escape hatch from the social contract.

>You just are/I just am

Is not an acceptable thing to say to a bar tender when being served an alcoholic drink when you're 22. You hand them government issued ID.

> Governments are lame

In 2019, the EU created an eIDAS compatible European Self-Sovereign Identity Framework (ESSIF).

How is the government lame, here? We've had the infrastructure for 7 years now.