Why does All-Mighty God need our supplication and worship? Why does He demand this so much?

(photo from : http://www.islamsitesi.net)

Most of us ask this question to ourselves while having inner talks or to others while having discussions. Apparently, such a God who created everything out of nothing won't need anything, then why does He require us so much that we must pray and worship to Him? 

Logic tells us He won't need it, therefore the case must be different than "need". Indeed, it is different. Let's hear these words:

"God Almighty has no need of your worship, nor indeed of anything else. It is you who needs to worship, for in truth you are sick. As we have proved  in many parts  of the  Risale-i Nur,  worship  is a  sort of remedy for  your spiritual  wounds.  You  can  understand  how  absurd  it  would  be  if  an  ill person responds to a kind doctor who insists on his taking medicines that are beneficial for his condition by saying: “What need do you have that you are insisting in this way to give me these medicines?”

 As the example states, God gives us the prescription for the wounds and pains of our soul which suffer from the stress and depression of the world. Most of us see injustices and wrongs around us, and these leave our soul and heart in pain at times. The only way that our soul can breathe is through the channel which connects us to our Creator. This channel is worshipping and supplication.

What is more about supplication:

"The best, finest, sweetest, most immediate fruit and result of supplication is this, that the person who offers it knows there is someone who listens to his voice, sends a remedy  for  his  ailment,  takes  pity  on  him,  and  whose  hand  of  power  reaches everything. He is not alone in this great hostel of the world; there is an All-Generous Being who looks after him and makes it friendly. Imagining himself in the presence of the One who can bring about all his needs and repulse all his innumerable enemies, he feels  a joy and relief;  he casts off his load,  which is as  heavy as the world,  and exclaims: “All praise be to God, the Lord and Sustainer of All the Worlds!”

 Who can know the possible problems of a machine better than the manufacturer? Who can know our desires, problems, wishes and longings better than our Creator?

Read more: http://www.nur.gen.tr/en.html#leftmenu=Risale&maincontent=Risale&islem=read&KitapId=499&BolumId=8787&KitapAd=Letters+%28+revised+%29&Page=347