Secular humanism gets pretty retarded at many points as well.
Secular humanism is Christianity with humans made into a God, replacing a supernatural one.
There is no way to prove or disprove God, least of all because God is not very clearly defined. Dualistic God? Pantheistic godness? Hindu godhead? Greek God as source of Gods and evil alike?
Any real proof of God will be an exhaustive examination of the patterns of energy transfer in life, and an attempt to build an architectonic argument. Good luck; most of us will have fallen asleep or died by page 1800. However, I encourage this endeavor.
Whatever exists that made what is here is divine, and whether it's a supernatural god or some glorious impulse in the matter of this universe, I don't care -- I am thankful and reverent toward it, because life is a great gift. A gift unmeasurable. Even with sodomy.