The first problem occurs when one tries to use the words 'rational' and 'God' in the same sentence. Then, when one realises they cannot, it immediately switches to the 'default' of the human brain and thinking process: "If God cannot be rationalized, God is irrational. Irrational things do not exist - therefore, God does not exist".
I could say that 'God is totally outside the realm of limited human understanding' but that looks like a Theist 'cop out' doesn't it? I mean, somebody with half a brain could say 'well, if God isn't meant to be 'understood', then how can I 'understand' God'? Yeah, case rested.
Just because something cannot be proven as existing, doesn't mean it doesn't exist...doesn't necessarily mean it does either, but the option is there for a deity to exist, where there would otherwise be none.
I am a very logical an responsible person and I am not given in to superstition nor would I believe in anything that 'didn't exist'.....and let's face it, I really don't need to 'believe in God' because I know God exists I just know it and I 'know beyond knowing' know it!
Sometimes, I see a person who wants to feel Lord Shiva in their heart and I wish I could share just even 1% of it. So, is God just an emotion for me? not existing in any real form beyond that?
Well yes...and no, but if you could feel that, then you'd know it too.