Why Long Marriages End - Marriage, Divorce, Break Up, Separation - AARP: "The answer is longevity. We live so much longer now. Half a century ago, an unhappy couple in their mid-60s might have stayed together because they thought it wasn't worth divorcing if they had only a few years left to live. Now, 65-year-olds can easily envision at least 20 more active years — and they don't want them to be loveless, or full of frustration or disappointment."
