A certain saintly man says: "I went for Hajj and while making Tawaaf I saw a certain man making dua so earnestly, crying out so loudly, that the other people who were making Tawaaf became quite distressed, but his heart was not turned to Allah at all. Then at Mina I saw a man selling a thousand dinars worth of material but throughout the sale, his heart was not for one moment negligent of Allah."
This is how it is with us. All our Salaahs, Duas and Ibaadat are mere rituals without any Inner reality. With wailing crying, we utter words like parrots and we do not even know what we are saying. With Allah sincerity is of the utmost importance. Noise and shouting is of no sequence.