That is why a religious belief can motivate a missionary to be a martyr. When the hurt of the religious becomes acute, it explodes into violence. Conversion is violence. It generates violence. Aggressive religions and non-aggressive religions are not on the same plank.
Conversion is, therefore, a rank, one-sided aggression.
The genius of the non aggressive traditions cannot change, and therefore, they cannot be asked to do the same thing as the aggressive religions do. Humanity cannot afford to lose any more of its existing living religious traditions and cultures. We want to enjoy the religious cultures of both Christianity and Islam as we also want to enjoy the cultures of Jews, Parsis, Taoists, Shintoists, Hindus and others. Humanity will not let a pyramid be razed to the ground by the Egyptian government to create a housing complex. Even though they are in Egypt, the pyramids are too ancient to be the property of that country.