Quote:So we are faced with the problem of what happened beforehand to trigger the big bang.If you think this is a valid question, then you have no idea about physics or the Big Bang theory. The Big Bang theory posits that time did not exist, and that the Big Bang was the expansion of space and time.
If this is true, then the universe was "always" existing (in a timeless state). This doesn't mean it existed for an infinitely long period, because time did not exist for there to be any periods What it means is that there was a start to time, and thereby a start to cause / effect through the start of time. It doesn't show that there is a God, it shows that the universe could indeed have existed "forever" in some state, given the meaning of the word "forever" when in the context of time as something that had a beginning.
