My 'Intro to Religion' professor in college (before I was an atheist, though he was a BIG help in that regard) did a thought experiment where there was a 'God Detector' and you would have to take it all over the universe to say there was no God (he was 'explaining' why his class wouldn't be addressing atheism: because it is irrational). I had much less experience with critical thinking back then, so it took a day or two before the Fridge Logic kicked in and I went 'hey, wait a second!'. Of course, if there were a God Detector that failed to detect God as soon as you turn it on, it's disproved the existence of an omnipresent God; one of those cases where you could, in theory, prove a universal negative.
I'm not anti-Christian. I'm anti-stupid.