Fiat currency is manipulated by government through printing unlimited money. This started in the United States when they couldn't afford the Civil War anymore so they printed "greenbacks" and told soldiers to keep fighting and these pieces of paper would be worth something. Gold price is manipulated by government. Fiat currency is basically trust in government. Do you trust them?
Most assets(real estate, cars, etc.) are valued in fiat currency(dollars) and if Government can print as much as they want(like they did during covid) it's impossible to own any real wealth.
You only have two ways out of the system, invest in stocks with Monopolies(Apple, Microsoft, etc.) or Bitcoin. There is no other way to hold a reliable, long term source of wealth that is relatively inflation proof as government creates inflation through printing money.
Bitcoin has a limited supply. You can't print it forever. Government becomes helpless. There is no other way to have reliable, inflation proof storage of wealth.