What is the use of River Ganga?????

Yes this is what I wanna know. Why is the River Ganga (Ganges) flowing still today? What is actually the River Known for? In all the holy books allover India , it is been mentioned that whoever takes a holy dip in the waters of Ganges, get rid of all the sins he have commited. The water of Ganges have such power that it washes away all the sins from wherever it flows and whoever comes to its touch. In our holy Purans, Upanishads and Bhagawat , everywhere it is been mentioned the benifits of Ganga Snan. Ganga is said to be the purest of all rivers and that with her blessings evern the most wicked get his/her sins washed away and be a nobel men/women. India is proud and lucky to have such great river flowing on its beds.

But I have lots of questions in my mind which are always pinching me , hurting me and forcing my tears to drop out of my eyes. If so sacred is Ganga and if it flows through India , then why is our nation suffering from all the evils of bigotry, selfishness, brutality, murders and terrorism. I dont know how sinfull i will be if I raise my finger on Ganges, that if you are known for cleaning all the sins of the sinfull, then why is my nation still suffering from all those evils of society. Why dont you realise whats your duty ? Why you dont realise that many people pray you as Mother? Why dont you hold the fingers of your children and give them a new life away from all the evils? Why is everything in our nation is covered by the shadows of evil clouds? Why ? Why ? Why??? O Mother Ganga, please show the world that you are still the one as mentioned in our holy scriptures. O mother Ganga, Let your children seek eternal purity by your touch. Arise O Holy Ganga, Arise for history demands to be repeated. When my nation still have faith in you that you will keep her cleansed from all bads and evils, then please , please, please clean away all the devils of society from this nation, please. Please Give us the nation of Saints, Learned, Noble Kings and People pure in hearts. Please give us all that we lost with time. Please give us our humanity back, so that we still expect the hopes of this human race to survive.