Reposted:
Here's the question I would pose to those who are trying to find "proof" of the existance of God: What if God existed on another plane or dimension on a level indetectable to the current scientific methods and observations? What if He existed trancendent to Space/Time continuum? Afterall, there are scientists who propose mathematically in quantum physics that there may be as many as ten dimensions, yet we haven't been able to see these dimensions. This would then put God out of reach to the known physical world, yet it doesn't mean that God doesn't exist, you just can't prove God by scientific means. Perhaps He planned it this way so that we can find Him in the only way He desires us to know him: through the spirit in man.
What if the only way to know God is through the God-given spirit in man which originated from Him? In connecting God through our spirit with His Spirit, we can know who He is and know His love for us without trying to figure Him out. I know this seems subjective, but when there are people in all different religions claiming on seeing visions of God, dreams of God, coincidences that defy reason, near-death experiences in which they see God (even some athiests) in the spiritual realm, testamonies of people who have had remarkably answered prayer, changed lives, feeling of forgiveness, incomprehensable love which came as a result of a faith in an unseen God, when there are that many voices attesting to this same type of phenomena, then it's no longer subjective, is it? The only way to "find" God is to seek Him with you spirit, if you seek Him with all your heart. You'll have your "proof" there.