Glad to see such a nice post with calculations. Its reality that we really don’t spend our time on the things that really matter, Because one is not aware of that things. Humans are going according to what mass of people are doing.
But now its time to realize our true Self(Soul).Soul is eternal and it is the only thing which is mattered as all the things are materialistic and temporary. See why Soul matter most. -> http://www.dadabhagwan.org/path-to-happiness/spiritual-science/who-am-i-realize-your-true-self/