Who tell me why?

Who tell me why?

Who tell me why,
there is cancer in this world?
That the old one die because of it,
And left the small one there panic.

Who tell me why,
that there is always breaking heart,
And cause the young one kill herself,
And left the mother there sobbing.

Who tell me why,
that when there is poor one
pleading for help,
The rich one always kick them out?

Why why why?
There is always so many why,
And who can tell me why?