Un-related. Hell?

It propably means, that if god do not exist, it must be invented for various reasons that Voltaire was thinking, I think that some those are: There are peoples whose life goes little downhill... say heroin addict. If heroin addict "found god" and leave the stuff behind cause of his belief or enlightment or anyelse depends on what religion or god we talk about, its propably necessary if it is only way that that poor being can get to his feet again.

Ofcourse if we widen our sight what the other reasons are, they might be politics or other reasons that been written in this topic.