I must say purpose is one thing that anyone should know before indulging himself on any other things or money.
But the world today chooses money because of our ways of living.
People no longer know the reasons or purpose for their existence, they no longer concentrate any more, both big,small,old and young no longer think of their selfs. What they are capable of making.
I know Money is good and wort dying for, but knowing your purpose on Earth will make one to live a long and suitable life.