As Americans reflect on 2025 in its final week, many retirees are calculating and stress-testing if they have enough to endure various financial situations. For those falling short, unretiring may be the best option.Over the past year, I've spoken to over 250 older Americans, most of whom still work. The majority said they never retired or unretired because of financial uncertainty. Some lived paycheck to paycheck with limited savings and no defined-benefit pension plan. Others had six figures in the bank b ...