To which the next obvious question is who wrote the God beliefs and who first told them?
Obviously they were written by men trying to find an explanation for everything. Who first told them? We can't ever know, since writing hadn't been invented then.
Actually a God is one of the obvious options when thinking about why there is anything anyway.
Yes, that is why so many fall for it. But it doesn't take much intelligence to realise that it's all guesswork.
If one does not self formulate a god hypothesis in one's thinking of why something rather than nothing then you have a malfunctioning brain I'm afraid.
That is a sign of you inability to think very far. The honest and most sensible answer is to admit to not knowing. Inventing answers is a childish game.
Another hypothesis that should naturally spring to mind of course is it all just popped out of nothing spontaneously.
I don't believe in magic.