God uses the instrument of faith, not scientific evidence. Again, science can not deny God's existence nor prove God's existence. Considering God is outside of the universe, we can not do anything to test the presence of God. The only choice we have is to believe in such a thing or not. Then again, it is precisely that which would determine our final destination, if God were to be true.
Are you familiar with Descartes' Evil Demon argument? It's somewhat applicable to this type of argument.
# God has never left any physical evidence of his existence on earth.
Faith.
# None of Jesus' "miracles" left any physical evidence either.
Such as healing a blind man? Why would that leave any physical evidence?
# God has never spoken to modern man, for example by taking over all the television stations and broadcasting a rational message to everyone.
Why would He? If He did, everyone would believe in God. That defeats the purpose.
"Then said one unto him, Lord, are there few that be saved? And he said unto them, strive to enter in at the strait gate: for many, I say unto you, will seek to enter in, and shall not be able." (Luke 13:23-4)
# The resurrected Jesus has never appeared to anyone.
Apparently, we're not that close to the Day of Judgment.
# The Bible we have is provably incorrect and is obviously the work of primitive men rather than God.
Perhaps the original Bible was true but "visions" by Paul and such changed the entire works of it.
# When we analyze prayer with statistics, we find no evidence that God is "answering prayers."
Faith.
# Huge, amazing atrocities like the Holocaust and AIDS occur without any response from God.
Explained in the other thread, we would need these things to restore balance. Many claim that the Holocaust occurred because the Jews were unfaithful. AIDS are done to show the sign of homosexuality being a sin, etc. But I admit, I am ignorant of how AIDS spread (also we do not know how it started).