The most popular narrative for tax is that it exists to serve the public good. It exists to fund our most basic “necessities” such as public schools, healthcare, public transportation, etc.
This is not the primary purpose of tax.
Yes, it’s true that such endeavours are possible via tax, but it is not the primary.
Ask yourself why the government would need something that they alone have the power to create. Why would they need our money to fund public services if they can create it…