One birth, life and death, humans start passing their life in struggle. Like a candle, to enlighten its boundaries,candle starts burning. People in dark find the way in candle-flame. But they never try to know when a candle is over and never think its required too. Instead lighten-up another one.
But don't forget even if candle-flame is over, it leaves wax around. So as we, humans always leave memories behind . Never try to understand the value of people when they are around.