Creation myths and stories of gods emanate from the four corners of the earth, so why believe tales from desert tribesmen of the middle east rather than, say, those of the the ancient Chinese or the Hindu people?
Science has never been able to explain what caused the 'Big Bang'. It can't, as the general theory it that there was nothing there before it. In other words, nothing could've started the 'Big Bang' as there was nothing there to start it, so what are we doing here? Or has the universe always existed in some form or other?