Go on then, Gronank. Betcha yer can't…
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I'm afraid that all my previous arguments for the existence of God were rendered null and void when I discovered/realised that they were based on experiences that had taken place wholly in my mind, and thus were (probably*) restricted to my brain.
In other words, I reluctantly had to admit to myself that all the experiences I had interpreted as spiritual/supernatural were more likely, on the balance of probabilities, to be hallucinations generated by oxygen-starved
† brain cells and rationalised after the fact under the influence of my religious and cultural upbringing.
They
felt real at the time, though.
Edited to add:
appropriate YouTube link from Qualia Soup.
*
Probably: since it has not yet been proved that there is mind without matter, and it is impossible to prove that there isn't mind without matter, but because all research so far conducted has only discovered mind as an emergent property of living brains. That isn't to exclude the possibility of future research discovering mind in brainless life (such as jellyfish, plants and Tory MPs), or even non-life of sufficient complexity, or even as a property of non-matter; although the latter would seem impossible given what humans have discovered so far about the functioning of our universe.† Random arteries going into spasm at random times deprive the organs downstream of them of vital nutrients and, critically, of oxygen. In my heart they cause angina. In my guts they cause pain and digestive problems. In my brain they cause pain and/or hallucinations and/or paralysis of the part of the body usually controlled by the affected neurons.