That said, outside of a mortgage, there's a solid case to be made that Mr. Ramsey is on the money about paying down debt first before investing. Most credit cards, personal loans, auto loans, student loans, and other forms of debt most Americans hold carry interest rates far in excess of what any high-yield savings account or CD can guarantee. And all investors know (or should know) that there's always a risk of losing money in the markets. On the flip side, paying down a credit card with a 20% interest rat ...