It's pretty funny that people think that eliminating Bible would make the world somehow a better place. Religious missionary was one of reasons of western civilization spread. Removing religion would prevent that. Does it mean joy and friendship would spread instead? Hell no of course. Just another religion and another civilization would take its place.
It does not mean we need to retain religion now, but thinking that world without christianity would somehow be better that world with it is a funny idea. It would not, because another global religion would take its place.