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The relative security afforded by various factors in developed countries (especially USA) since after WW2 up to now may not be available going forward. The biggest challenge is the increasing proportion of non-working people to working people, at least partly due to aging and fewer children.

The part of spending you can't control and which happens to be the largest expense is medical care, which is not a problem right now due to Medicare, but it's already stressing the system and we have quite a ways to go before the aging population maxes out. Retirement ages are already going up and up, and I can definitely foresee rationing of medical care as we push the system to its limits.




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