ISIS's Deadliest Weapon Is the Idea of HeavenPresume, for a moment, that you accept that premise. What is the logical response? Genocide, or ethnocide, or whatever you call the mass murder of believers, is the logical response. Repugnant doesn't begin to cover it.
What if the alternative is that they win? If your alternatives dwindle down to dying or converting? At what point do we conclude if somebody has to die, it's better if they die? Do you sense the rock and the hard place getting closer together?