A brief summary compiled in response to some anonymous comments.
For someone who says “I don’t know” a lot, you certainly seem keen to classify God/religion as something imaginary or irrational.

From the evidence available to me I sincerely think (and believe) that God IS. I have not made a priori commitments to this position. I have spent years considering, questioning, and attempting to understand the truth claims of the Christian worldview (amongst others). It requires a degree of independent thinking to remain steadfast in the Christian faith in a culture soaked in secular humanism such as NZ. But I do find a great deal of comfort from the words of the Psalmist and the prophet Isaiah, and I have been privileged to experience the redemptive, healing power of the Holy Spirit in my life, and countless revelations of His love.

Some evidence which points to a Creator:
Existence ex nihilo. Order from chaos. Life from non-life. Mind from matter. A chain of millions of coincidences, culminating in mankind. Creation is striving upwards — as Paul Davies said, the Universe appears to be specifically designed for humans to arise. Frances Collins, director of the Human Genome Project, is a Christian who asserts that the vast complexity of the DNA molecule is powerful evidence for a Maker.

But beyond cosmology and biology there is also very strong evidence in history, archaeology, anthropology, psychiatry, philosophy, and the arts. The Christian faith has motivated immeasurable contributions to humanity. For specific evidence for the divinity of Christ, consider the hundreds of documented eyewitnesses, the empty tomb, the miraculously explosive growth of the early churches, the documented miracles of the apostles, the willingness of thousands of believers to face death at the hands of the Romans.

a) cosmology: the universe is apparently fine-tuned for life to appear. To claim an Intelligent Designer is far more sensible than MWI speculations.

b) philosophy/logic: it is rather absurd to claim that something came from nothing; God is the First Cause (Danyl’s naturalistic objections fail to answer WHY there are laws of nature in the first place).

c) history: the resurrection of Jesus Christ is a VERY strongly attested historical event. Personal eyewitness accounts, willingness of apostles to die, explosive growth of the early Church. Not to mention fulfilled prophecy (eg. Isaiah, Psalms), divine intervention throughout history of Israel (eg. Exodus)

d) biblical authenticity: sheer weight of archaeological evidence, corroborating documents, and blessings upon human society. Not to mention the beauty, consistency, and divine wisdom of the text itself. It’s the core document of the Western canon. Its influence on Western thought and society would be hard to overstate.

e) anthropology: Missionaries report the distribution of convenient myths seeded throughout unreached people groups, telling of the coming of white people with a book, or in sailing ships, or the death of God’s son, or a great deluge, or the loss of knowledge of the One True God

f) ongoing supernatural events: miraculous revivals of faith and mass conversions (Wales, S.Korea, Uganda, Zambia), numerous miraculous healings

g) the persecuted church: is growing in the midst of hostile environments such as Communist China and Islamic countries. The faithfulness and bravery of believers in the face of death is eloquent testimony to the glorious hope in Christ that has filled their souls.

h) Jaki showed that a Christian worldview was an essential crucible for the birth of modern science. It requires Faith: that nature obeys God’s laws, that mysterious events do not occur by a deity’s capricious whim, that Man has a mandate from his creator to use his brain, think independently, and inquire into the world around him. Scientists of all creeds are generally inspired by a sense of wonder at the mysteries of creation, and delight in fathoming the patterns of nature.

I have ample references for all of the above assertions.

The believing Jew or Christian does not feel the need to be embarrassed when materialists attack religion as ‘anti-scientific’ or irrational. For he regards his own beliefs as not less but far more rational than those of the materialist. He regards them as providing a fuller, more coherent, and more sensible picture of reality. A picture in which the existence of the universe is not merely some colossal accident, in which human life has both purpose and meaning, in which ideas about truth and falsehood and good and evil are more than chemical responses in our brains, and in which the beauty, harmony, and order of the universe, which science has helped us to see more clearly than ever before, are recognized as the product of a wisdom and a reason that transcends our own.

As Bryson unwittingly proved, it is rather absurd to claim that something came from nothing, and in the time it takes to make a ham sandwich at that.

Stephen Barr, Modern Physics and Ancient Faith

You’ll never get “absolute” proof of God, but two millennia of searingly honest, dedicated Christian scholarship have yielded a faith more robustly founded than ever.

Finally I should add:
All of the people that refuse to believe in God, are welcome to. It would just be nice if the tolerance for other people’s beliefs extended beyond a thin veneer. What is important, is how people ACT.

My command is this: Love each other as I have loved you. Greater love has no one than this, that he lay down his life for his friends.

Further Reading:
The Weaknesses of Dawkins
Interview with Alvin J. Schmidt, author of “How Christianity Changed the World” (ISBN 0310264499)
POP goes the fulminating atheist bubble