In a way, you are true...different part of India has different reason to not to allign with Pakistan...But it is also true, that we do not question why Pakistan is created...Again, i am not talking about politicians...Rather, most of the current generation will feel happy that it is good Pakistan got created as it is technically impossible to live with set of people who are in different thought process than us...So at least we should be both assured, no one would like to question about why some nation got created.
Challenge is about past history of Hindus where they are always invaded by Muslim rulers who are not from our land...That created a sense of insecurity and sense of anatagonism in Hindu psche that Muslims never like to be with Hindus based on equality...The fear that some day, Muslims will again force their culture on Hindus is creating ripples in mind of Hindus...
Gandhiji's call to make India for all was one of the biggest challenge to be accepted in modern day today...It is a very good concept, but it is a challenge to implement it with limited resource. Rather, it would have been ideal and may be both of us can be in a good relation to make a Muslims Pakistan and Hindus or Non Muslim India as 2 nations...If that was the call, then there is no need for India to even hold on to Kashmir....
People says, move on leave the history....Most of the hindus are ready to leave the history...But does the Muslims in general ready to leave the past??? If Muslims can protest about issues that are 500 years old...then that creates ripples in the mind of Hindus like me, why i should only forget my history????
So in a nutshell, Kashmir is just the reason for both of us to be in conflict with each other...If there is no Kashmir today, Pakistan will find something else...So what is the point in allowing Pakistan supporters to have a good like by allowing independence...If we are suffering with conflict for 70 year, we will also sure, anti Indian elements waste their generations in conflict in Kashmir valley...