If we were facing a threat similar to that what India is facing, we would be more than happy to give up all these heavy weapons. Unfortunately, we are facing some of the toughest insurgency this world has ever seen. When you are up against a ruthless enemy like that, you have to get ruthless and bring yourself down to their standards.
To be really honest, I am not impressed by Pakistan's results in Counter Terrorism. Ofcourse you are free to have your own opinion.
This is the second major insurgency that Pakistan has faced, the first one being Bangladesh.
And Pakistan's approach has more or less been the same to both - go in all guns blazing and firing whatever you have stocked.
Pakistan Army conducts an operation, fights them, then moves on or moves out.
India uses a very very different approach in COIN. There is a great article about it, i will try and search it for you.
India has faced massive insurgencies in many parts of the country. And large parts, continuously over 3-4 decades.
India does
not go in all guns blazing. India starts flooding the affected area - even areas that are bigger in size than what Pakistan is facing now. GoI floods the area with troops. Only engaging when fired on till there is a certain man/soldier ratio achieved.
After that ratio is achieved they start killing selectively.
Now, this approach is ridiculously expensive in terms of men and duration. The defense forces are kept in the area for a minimum of a decade!
The Pakistani approach costs least in terms of lives of soldiers lost. But India has been extraordinarily successful in clamping down on insurgencies.
All insurgencies in NE are all but practically dead. Their leaders - almost all of them - either shot dead or in jail.
And then finally GoI goes in for negotiations - generally these are to give a face saver to the leaders in the region so they can calm the disgruntled population. Its however mostly
after a military defeat over a decade. In these negotiations, GoI is generally willing to remove any real or genuine concerns or grievalnce that the local population would have against GoI. However always within the ambit of the Constitution of India.
Kashmir is hardly a shadow of what it used to be in the 90's. The maoists are the only real one remaining. And that is a social & economic problem, not a political or a military one.