No I haven't. But don't you believe that consciousness exists even if you don't?
How can you do that, when all you have is your own?
But that is false. I have other reasons in addition to my own experience for believing consciousness and pain etc. exist in other creatures but no reason to think that they exist when creatures do not as you postulate that God does.
I.e. there is an OBSERVABLE great similarity in humans, including several distinct EEG stages, which are well identified with conscious state, deep dreamless sleep, dreaming while sleeping, and some other more pathological states; so yes these OBSERVABLES do strongly suggest that all humans and many of the higher non-humans have these same stages of consciousness (as does their behavior).
Perhaps you're confusing an experience with whether you believe or disbelieve an experience is real.
No. Although I cannot be sure,* I strongly believe that when you are subjected to an external stimulation, say lite cigarette pressed against your arm and you yell, scream, try to remove it, etc. (as psychologists say "exhibit pain behavior") then I do conclude you are experiencing pain, - Note however, I do this on the basis of OBSERVBLES.
So then, this awareness of pain, or of dreams, is independent of your belief in them as I said? That is, they exist independently of your belief in their existence, as I said?
Very probable they do IN all normal humans , the apes and monkeys, dog, cats and quite a few other creatures, which exhibit "pain behavior" when external stimulae are applied to them that I know cause pain in me.
However, I do NOT believe that pain exist in the absence of any of these creatures. If you go quite far down the stages of evolution, say to the amoeba, I tend to think they do not experience "pain" even though they do exhibit some "pain behavior" (move away from water region where a drop of acid has been placed, etc.) but I could be wrong about this. That belief does make it less disturbing for me to kill much more complex creatures like a fly.
That is the huge difference in our point of views. You think God exist even if there were no creatures who can individually experience him or pain. I don't. I think God is a creation of humans, not the other way around. Perhaps something like "god" is also created by some non-humans - those that do have ritual they perform for their dead like burying them with some food.
... since not everyone has this experience (unlike the belief in consciousness etc) then YOU have to accept that "god" is a function of your mind only. And also stop telling the rest of us about your aberration.
Thus, as things with zero evidence for existence (like ghosts) are believed to exist by ever smaller fraction of humans, do you think it possible that god would not exist when no one believes he does. Or when some virus kills all humans?
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* "Psychological Zombies" have been discussed in the literature and no one has proven they are impossible to exist but no one believes they do.)