OK..So we live to be 90+ What all these articles fail to understand or articulate to the reader is that your money needs decline after a certain point.
It is my belief that the most active spending is going to take place before 75. Most of the relatives and people I have known have greatly reduced their spending by that point in life. The energy levels are typically zapped, arthritis and other ailments of aging have started taking their toll. If you haven't already traveled and seen all that you want to at this point, you probably never will. Your desire to redo the bath or kitchen is probably gone as well. So your needs are likely to be for only basic necessities of life.
So your need for money has diminished to tv dinners and cable bills.