The fundamental challenge centers on balancing immediate income security against longevity risk. With life expectancy potentially extending 20 to 25 years, inflation will erode purchasing power significantly. A woman retiring today at 66 could live into her late 80s or beyond, meaning her portfolio must sustain withdrawals while maintaining growth. Social Security survivor benefits provide the foundation. A widow receives the higher of her own benefit or 100% of her deceased spouse's benefit. If she received $2,000 monthly but her husband received $3,200, she now gets $3,200. However, household expenses don't drop proportionally. Research shows a surviving spouse typically needs 75% to 80% of the couple's previous income.