Here is my attempt to draw a graph that represents how much we value our time (i.e. time left before we die) as a function of time since birth. Initially we aren't aware of time (or, don't think about it at all). Then, we often get tired of life and wish it would move faster (when we are young and especially in our teens). Then at some point, we realize we are going to die and our time left becomes more and more valuable, until the very last second, when we would do anything to have a little more time.
"All my possessions for a moment in time."
-Queen Elizabeth I
Where are you on the curve?