I'm not ignoring anything. In response:
1 - Greater than Kashmir?
In terms of area i doubt, but some states like arunachal pradesh is prettu decently big, also Aski Chin, if you want to add to it among others.
2 - Biggest defeat at the hands of China? India have only had one war China?
only defeat, against Pakistan they were stalemates or we won.
OR, are you talking defeat in terms of humiliation? I cannot see how the inception of Pakistan did not serve as a greater humiliation compared to a one off war between China. Pakistan made India look like fools when Pakistan was created, unless of course you are saying India simply surrendered the land of Pakistan?
vice versa we did the same to you in case of bangladesh, etc etc
Frankly we know Pakistan does not have the capability to win a conventional war against India, like we can't against China so
who becomes our primary threat?
3 - And? You think by building an atomic bomb India can catch up? Dream on.
Nopes but nice deterrant

We wont be able to destroy China but we can hurt them
I'd have thought The Himalayas played a key role.
conventional warfare maybe, but technology has made major changes
Oh dear, the above simply demonstrates the priorities of India; Pakistan a top priority with Agni II, then China, with Agni III.
What do you really expect? People like to walk before we run. Now India is working on ICBMs with greater range. If you dont have the knowhow to semi long range missiles you are not going to be able to build long range. Agni I, II, III etx are a natural progression
Oh yes, Agni I, a missle with a range of around 700km, only suited for targets within Pakistan.
Oh, you say Agni II is sufficient for Pakistan? One nuke dropped on the Tropic of Cancer that disects India will all but eliminate the Hinduism and the legacy that goes with it. Even if Agni II is sufficient for Pakistan, Islam, and the history associated with it, will continue to survive worldwide. Do you now see why India developed the atomic bomb?
No, I don't because it makes no sense about how a bomb stops the above from happening?
You equate Pakistan with Islam, we equate Pakistan as a country that is the enemy. Major difference in thought process.
It's a book.
which does not have the word islam in it, it has pakistan, India nuclear weapon but no mention of Islam.
Do a google book search and search within the book, it is avaible in one of the editions