Countries aren't bankrupt, they can't really go bankrupt if they use their own currency. Countries are not businesses they don't need to make money to be able to spend.

Tax shouldn't be seen as the countries income but as a tool for redistribution of wealth and to keep trust in the currency as a whole. If you don't have debt you don't have money, every printed dollar goes into the system and can be used in various things not only an asset earning interest