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People who buy annuities, it turns out, live longer than people who don’t, and not because the people who buy annuities are healthier to start with. The evidence suggests that an annuity’s steady payout provides a little extra incentive to keep chugging along.
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Steven D. Levitt (SuperFreakonomics: Global Cooling, Patriotic Prostitutes And Why Suicide Bombers Should Buy Life Insurance)