Earlier quoted context omitted.
Can you prove the Big Bang occurred? If so, can you prove that nothing preceded a Big Bang? If you are as rational as you arrogantly imply, then the obvious answers to these are no. Are you equally appalled when you come across average people talking about these theories as if they are facts? I wonder.
Big Bang is the best available explanation of observed facts. This doesn't mean it's the right one, but other explanations are inferior. Especially those provided by religions.
The major monotheistic religions state that God created and initiated our universe, which does not contradict that a Big Bang happened.