Atheists: Does the shroud's (of Turin) authenticity forever solve your doubt of God's existence?

I doubt that the Turin Shroud will ever be considered as conclusive proof of anything, let alone that God exists. At best it could only ever be viewed as evidence that someone was buried in a tomb in Palestine about 2,000 years ago, but controversy still rages over the dating of this piece of cloth. Jesus himself is recorded as saying that even if someone returned from the dead, those who refuse to believe in the resurrection would continue to refuse to believe in the resurrection (Luke 16:19-31). The most important evidence that proves God exists has nothing to do with material evidence – it is the empty tomb. Here are a couple of paragraphs from the Wikipedia link that I consider to be relevant:

Religious beliefs about the burial cloths of Jesus have existed for centuries. The Gospels of Matthew 27:59-60, Mark 15:46 and Luke 23:53 state that Joseph of Arimathea wrapped the body of Jesus in a piece of linen cloth and placed it in a new tomb. The Gospel of John 19:38-40 refers to strips of linen used by Joseph of Arimathea and John 20:6-7 states that the Apostle Peter found multiple pieces of burial cloth after the tomb was found open, strips of linen cloth for the body and a separate cloth for the head.

In 1543 John Calvin, in his Treatise on Relics, wrote of the shroud, which was then at Nice (it was moved to Turin in 1578), "How is it possible that those sacred historians, who carefully related all the miracles that took place at Christ’s death, should have omitted to mention one so remarkable as the likeness of the body of our Lord remaining on its wrapping sheet?" He also noted that, according to St. John, there was one sheet covering Jesus' body, and a separate cloth covering his head. He then stated that "either St. John is a liar," or else anyone who promotes such a shroud is "convicted of falsehood and deceit".

EDIT: I entirely agree with you that Jesus said the only sign that would be given to the wicked generation alive back then was the empty tomb. Just as Jonah spent three days in the belly of the huge fish, so too did Jesus spend three days in the tomb. But the tomb is empty! And hundreds of people were eye-witness to his glorious, resurrected body before he ascended into heaven to return to his Father. That is the evidence, not a piece of material over which people will squabble and argue. I hear what you say, but my faith in God does not depend upon a piece of material.

I love that video