The kind of ill feelings and hatread seen in the messages of Hindi speaking population, if truely the feeling nursed by gross Hindi speaking population, then in my opinion, there is no need to maintain India as a united country, and with that kind of feeling it will not remain..
One of my Asamese friend, when I asked him about their anguish against people from other state, told me that they were only against Hindi speaking people as those from UP and Bihar want to dominate and disturb everywhere they go..
I think India will remain united only if everybody respects feelings and culture of local population.. Or balkanization of this country is not far away.. we may see division of India in our life time..
We already have problems in many areas of the country. If Maharashtra goes their way, devision will come sooner than later..