Burden of proof is on those making the claim. If proof can’t be provided there is a god, then the assumption must be made that there isn’t one.
Read about Russell’s teapot. Russell's teapot is an analogy, formulated by the philosopher Bertrand Russell (1872–1970), to illustrate that the philosophic burden of proof lies upon a person making unfalsifiable claims, rather than shifting the burden of disproof to others.
If you believe in fairy’s I will never be able to prove you wrong – you will always say either the time or the place was wrong.
