A retiree asked me: "Why should I invest in debt when my pension & rent easily cover my lifestyle?"
His case is rare - no loans, steady income, full medical cover, and children settled. His investments are truly surplus. For him, an all-equity portfolio may actually make sense.
But most investors aren't in that position. Rules like "always keep some in debt" exist to protect against uncertainty — income disruption, health costs, or panic during market falls.
Even for the wealthy, a small debt portion helps rebalance and buy more when markets drop.
Lesson: Rules work when their assumptions apply. If your life defies the usual risks, you can bend the rules - but only with self-awareness and discipline.
Markets test emotions more than logic.

