What makes you suppose God can't prove his existence?

One thing I find surprising is people that disbelieve the existence of God accept that the universe is nearly infinite and evolution adds greater and greater complexity to species. If that's so given another 20,000,000,000 years can't we assume that the species that supercede man will eventually become as Gods themselves? We can also assume the existence of other dimensions, can we not also assume that God himself came from another plane of existence where the creation of such a being is possible who then created our universe?

I don't believe in God, I know he exists. I've seen too many miracles in my life to doubt his existence. I do find it fascinating how such a being exists though and often wonder how.

Guess we all find out the hows when we die eh?