Would you rather the world be full of atheists or the world be full of christians?

Christianity · Either

the world be full of atheists

Removing religious division as a source of conflict could significantly reduce wars, persecution, and ideological violence worldwide.
A shared reliance on reason and evidence would likely accelerate scientific progress and reduce faith-based resistance to it.
A world with one fewer axis of fundamental disagreement might produce far more social cooperation and shared problem-solving.

the world be full of christians

Christianity at its best provides a shared moral framework — love your neighbor, treat others as you wish to be treated.
Religious belief has historically driven countless acts of charity, community, and compassion that purely secular systems may not replicate.
The founding of modern science was largely carried out by devout believers; faith and rational inquiry have long coexisted productively.
Without shared moral guidelines, ethical behavior relies entirely on individual interpretation, which could fragment a society unpredictably.