It is becuase of the British, a person from North India like you and a person like myself from South are proudly call ourselves as Indians.
the 1857 Uprising and Mutiny was a good. But, it was also good in the perspective of India, that movement had failed. Had it been a sucessful, sure India would have gone back to the Moghul Rulers and your generations would have either forcely converted to Islam or Killed or you would have found your women in the Mussalman's herom as sexual slaves.
In addition, to that between 1857-1947, the British had developed the Indian Infrastructure like anything. Like our Railways, Judiciary and the revenue systems and Our Parlimentry Democracy etc., Without their rule India would have gone to digs.
so, Kinldy go thru the facts before being so emotinal.