Why should that ever be a sufficient answer?
Because we are talking about the Faith forums. They are not oriented towards truth, reality or rigor. They are Faith Based.
If someone wishes the simply ignore all the evidence and insist that they believe the universe was created 3000 years after Kenniwick Man lived on the west coast of North America, then that is their belief. They have decided for some reason to simply ignore the existence of the Kenniwick Man. If they wish to believe that the Universe was created 18,000 to 20,000 years after the Venus de Willendorf was created, then that's fine. They have decided for some reason to simply ignore the existence of the Venus de Willendorf.
Faith is based on belief, not fact. I believe in GOD. I cannot prove GOD's existence, I simply believe in Him. In the Faith forums you can certainly ask me why I hold such beliefs, but the simple fact that they ARE my beliefs is sufficient.