What was once considered a niche is now becoming the new normal: solo aging in retirement. For millions, especially women, it’s a stage of life that demands more than savings. It calls for longevity planning that covers the entire infrastructure of living well in older age.

Nov. 11 or 11/11 is Singles’ Day, the world’s biggest celebration of buying for one. Why 11/11? Because the date is comprised of four single 1s. What started as a ‘not Valentine’s Day’ event conceived of by singles on a college campus in China is now a global retail extravaganza that generates more sales than Black Friday and Amazon Prime Day combined.

But beneath the…

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