If the Option is to Convert to Islam or Kill, means then why are you still alive.. Option-1: Muslims ruled India for 1000 Years, if your assumption is true means, then all the 90 crore hindus should be dead or converted into Muslim. Option-2: If the Hindus were successful in retaliating Muslim Invaders and retained Hinduism, then why there was 1000 Years of Muslim Rule ?? Option-3: The last assumption is all the Hindus lived a Nomadic life and Hiding for the Muslims... This is also false... Go to any Indian City, you can see the Palace of Muslim Kings near to Hindu Settlements for Centuries..
The Moral of the story is Nobody is compelled to change the Religion... That is why you are here alive and as a Hindu...
Every Hindu in India is a Living Proof that Compulsion is not used...