From observation and experience, I believe it is safe to presume that ingrained in every human being is a desire to do something great with our lives–to make our short stint in this world count for something. Perhaps greater than the fear of death is this fear that we would have finished our lives unnoticed by the world and that our very existence would be forgotten by most soon after we die. For while we all know that we are mortal and that we shall all die (be it ten years or sixty years from now), many, if not all, of us feel that if we can be remembered for something after we die, we will achieve some sort of immortality in this world.
And while we who are Christians profess our immortality to be vested Elsewhere, we are certainly not exempt from this desire to be remembered in this age. And while our ambitions might be sanctified to some degree when compared to those of the world, the underlying desire is the same—to be remembered on this earth after we have passed from it.