> You must sell [some of] your assets to feed hugry monster called government [which runs the courts, police, and military which all exist to protect the rest of your assets].
Fiat currency is a tool created by governments to accomplish goals. Massive income inequality generally conflicts with most liberal democracy's goals. Taking loans against unrealized gains lets people much richer than me pay a much lower effective tax rate.
Why not invent a new tax to address this?