That's a very biased website. It states that it is obvious to any thinking person that there is a God, but it is obvious to me that there isn't one. And to presume that the only reasonable way the universe could exist is if God created it, begs the question, "Then where did God come from?", to which the uber-religious reply, "It is not for man to question God! That is arrogant!". So in reality, their circular reasoning proves nothing but a pre-existing condition of faith-based faith, rather than anything fact-based.
If man could prove the existence of God, it would've happened already.
Maybe you should have a look at this...
SAB Contradictions