Unfortunately most people don’t invest well. Fortunately we are forced to have superannuation to ensure there is money waiting to support us after a working life. We can’t expect children to take care of us when we are older as may have happened in the past.
When you look at health expense, there is a huge amount spent on medical care and intervention in senior years and the question is whether that was due to old age or poor maintenance of health. We see it as both and most people don’t invest enough in their health with robust natural methods that help prevent future medical costs.