I'm genuinely curious what you think the "right" level of debt is, and how you justify your answer. The U.S. has only been debt-free once in its history, so obv

I'm genuinely curious what you think the "right" level of debt is, and how you justify your answer. The U.S. has only been debt-free once in its history, so obviously "zero" isn't the answer. And it seems self-evident that you are correct that there is a level where it becomes untenable. But what amount, and why that amount?