Will you live to 100, or do you think you're more the mid-80s type? What about full retirement age? Will you make it there?
Who knows, but judging from the numerous articles, podcasts, TV shows and books about longevity, it sure looks like we are supposed to know or at least have a good sense of how long we're likely to live. If we get the math wrong, we face a retirement shortfall — or we pass away before ever enjoying the money we sacrificed to save.
