The closer you get to retirement, the more obvious it becomes about how much to save to reach the goal. Until then, it's better to just try to eke out as much s

The closer you get to retirement, the more obvious it becomes about how much to save to reach the goal. Until then, it's better to just try to eke out as much savings as possible than estimate your spending. Estimating lifelong spending is quite similar to modelling global economic activity over a long period of time.