If you happen to die childless, the whole world will miss you;
The world will miss you because you haven't borne a child that looks like you
While widows can remember what their husband looked like by seeing a resemblance to him in their children:
Everything that a wasteful person spends in the world shifts from pocket to pocket, so it is continually enjoyed by the whole world;
But if you don't have children, you destroy your beauty when you die.
So it's selfish and unkind toward the whole world to not have a child.