You make my point for me. You and other atheists mock Christians for believing in the "magic sky daddy" etc, yet you have to have similar faith to believe what you believe in since there is no proof.
There is all sorts of proof though. Our universe is constantly expanding, we know that because we can measure it. That means at some point it was alot smaller, infinitely smaller. Eventually it may collapse in on itself again, then explode, and the cycle will repeat. Looking out into the universe is a gigantic history lesson for physicists.
And no, it's not really simpler. Takes as much to believe that the necessary matter was here from the beginning and then at some point ended up meshing and evolving into complex beings than it does to believe in a Creator who was here since an infinite "beginning".
Ok lets say that's true. What problem does putting a "creator" into the process solve? Nothing. It just stops thought. Imagine if we did that for all things. Why do things fall? Because gods drag them down. Why is there thunder? Gods fighting each other. Positing "god" into the equation for any question we have about the natural world solves nothing - it is counterproductive and stops thought.
Even if both ideas had no base, at least the one encourages us to keep looking and testing and thinking. "Goddidit" is perhaps the most awful and useless "explanation" that has ever plagued the human race.