This is how the RF Atheist usually replies
NO. I don't believe you:
1) First you must prove it to me
2) I want it written in black and white
3) It must be peer reviewed, by at least 10 other scientists
4) And it must be a triple blind scientific study
IF you bring me the above THEN I might take you up on your offer
This cartoonish depiction of the atheist's position is incorrect. We are rational skeptics. We require an empirical reason to believe anything. The theist cannot provide one, so we disregard their claims.
This vexes them. They don't understand this. They see it as rebellion against their faith-based claims rather than simple rejection of an insufficiently supported claim.
Show me anything that is better explained positing a god, and I will consider it. If you can't, why would the rational skeptic be interested in this hypothesis? It can be used for nothing. It adds no explanatory or predictive power to any idea.
So, yeah, bring me something substantial or bring me nothing.
Skepticism as a bias is indeed irrational.
Skepticism is one of the great ideas man has devised, up there with justice. It converted astrology to astronomy, alchemy to chemistry, and creationism to Big Bang cosmology and evolutionary theory. It overturned kings and their claims of being divinely appointed. It turned theocracies into democracies. It remade the world for the better. Yet you call it irrational and seem to prefer and promote the old school of thought, which was always sterile and a dead end.
Demanding proof for that which cannot be proven is illogical, and disingenuous.
Really? This is an illogical comment from you. Do you believe the horoscopes you see, or do you need more than faith to believe them? The horoscopes cannot be proven. If you reject them, how are you not being illogical by your own definition?
How about Chinese fortune cookies, which is astrology without the cusps and houses? Their predictions can't be proven in advance, either. Do you consider skepticism for them illogical, or is accepting them because you read them more logical to you? I find fortune cookies valuable, but that's because I live in Mexico and am still learning Spanish. Our fortune cookies are bilingual, so I always start with the Spanish side and translate it, then verify that I did it right by turning them over. Otherwise, like all faith-based belief, they're pretty useless except for the "in bed" game, where you add that phrase to the end of your fortune.
The skeptic is no more interested in pronouncements on logic from the faith-based thinker than he is in taking science from the creationist, and for the same reason. Somebody willing to believe by faith what he wants to be true, such as that gods exist, rather than that for which there is compelling evidence, has jumped the shark of rigorous reason.