Hahahahaah, Bullshit.
Pakistan was the brainchild of British super-power along with other powers of the time. A big rich India with no real enemy would have been another super power to coup with, so divide and rule was applied again and was made sure that the division is done on religious basis as this was the most effective division in this part of the world. To add oil to the fire, they also created problems like Kashmir etc , so that both keep locking their horns.
Pakistan, as it was used later on, was also a good candidate later on for manipulating super power's interests in this region. The British empire was all over the world and they created many countries in the middle east and far east, all according to their planning and future goals/possibilities.
Its a long topic and one can write whole book or books about it, but I am sure I will be soon abused here again like I was abused when I used to criticize the FOUJ and generals, was labelled as fifth generation, ghaddar and sometimes as "Qadyani spotted", this is all what our youth has been brought up with.