Why and how will it “collapse”? If you want to use the “printing money” analogy because you can’t grok the correct credit and debit process then you have to ac

Why and how will it “collapse”? If you want to use the “printing money” analogy because you can’t grok the correct credit and debit process then you have to accept that taxation “shreds money” and saving money (which is what a deficit is) “puts it in a drawer”. How does people putting money in a drawer cause a problem?