Why would that be anymore irrational than the same person saying he heard a gunshot last night at 2:00 AM but had no physical proof of the same thing? Again, you are confusing irrational with improbable. God is no more irrational than the laws of identity, contradition and the excluded middle. Indeed, less so.
It wouldn’t be irrational because gunshots happen all the time. Their is loads of evidence in damaged property and in emergency rooms that people fire guns at night. If there were the same evidence of alien abductions as there is for gun shots them you would not be irrational in thinking that your neighbor might have been abducted.
I should clarify. I have respect for someone who looks at the complexity of the Universe and the order and concludes that it was created by an intelligence. I would call him a rational man. He has a reason for what he believes. There is no conflict between that man and a scientist who studies natural laws or evolution. That is not where the conflict arises. The conflict comes when someone holds the bible up as a standard of truth and says to science “you better not say anything that contradicts this. This is absolute. And if your evidence says different they it is wrong. How is it wrong? Somehow. That is where the conflict comes from and it is a conflict of reason Vs. irrationality. Practically every time there is a thread on these forums about a fossil or cosmology or an ancient ancestor of man they come out of the woodwork to mock and ridicule with nothing more than their faith as evidence. That is what I can’t stand and what I consider to be the primary sin because all other evils stem from it. The refusal to think to me is the fundamental sin.