I'm going to put my two-cents here, even though I am not an atheist (relax, I am not going to discuss the topic proper).
From my experience, it seems to me that such an event is a matter of "moving the goalposts." Like, I'll believe in God if he cures my mother of cancer. I'll believe in God if he comes along in the clouds with a platoon of angels. I'll believe in God if he performs a miracle right now, this very second. I'll believe in God if I meet him in person. I'll believe in God if, if, if.
But suppose you meet in person, wouldn't you dismiss it as just another guy? If you saw a miracle right now, bah just a coincidence. If you saw a being in the clouds with a squad of angels, you would either say bah it wasn't a whole platoon therefore God must not exist, or I'm hallucinating that's it. And if your mother is cured of cancer, you'd thank the doctors (even though the actual statistics of chemo put it at about
97% fail rate).
The ifs being carried out are never gonna convince you. Neither will hours of debate, even logical debate. If you were gonna believe, you would accept...
- Seeing God in everyday people
- Ordinary miracles like life, orderly universe, and your own ability to evolve
- God's presence in your life without grand displays
- God's healing in our life, and even times where those in pain are allowed to rest
Since all of these claims above are actually lies, this topic is moot. I'm pantheistic, meaning I'm not really theistic or atheistic, I believe in a scientific universe, and I believe that universe has all the clues towards faith if one so chooses. I also believe that such a being as God is in me and in you.
So, God has rudely decided, through me, to enter a thread that the poster said "no theists allowed." God is speaking, through me, to you and telling you the truth about your so-called standards of what constitutes proof of God. Will the God that is in you listen? Or will you deny that part of yourself, and continue to make excuses for not believing? And honestly, if you want to be agnostic, this is fine too. But atheism, with a side of "I'll believe if" is just an excuse. You'll believe, or you won't believe.