I'll take the bait: why is someone considered a lunatic for claiming that he was abducted by aliens? Do we have proof (or even very strong confidence) that aliens don't exist or that they do but don't abduct humans? If we do have strong confidence, then what's the justification for this?
Do people likewise call all God-believers lunatics? If not, then what's the difference? In both cases people believe in an entity where there's no strong consensus on its existence.
Do people likewise call all God-believers lunatics? If not, then what's the difference? In both cases people believe in an entity where there's no strong consensus on its existence.