If I were out walking the dog and the sky went dark and a big booming voice said, "I am God. The creator of the Universe. There is a Heaven and a Hell...", etc, etc. (you know - brimstone, fire, eternal life, many virgins (depending on your particular religion), and all the other gubbins that goes with a belief in God) and this event was recorded by myself and others around the globe - countless videos and audio recordings of the exact same event happening at the exact same time across the globe... then I would accept that the likelihood of a creator deity that created the universe in which we inhabit and who is directly in control of our quite specific destinies, is true.
But until such a revelation occurs I shall continue to be a sceptic about the literal existence of God.
It's interesting that God could, if He so chose, announce His existence to the peoples of this planet with ease. To believe otherwise is simply absurd. This is the same God that apparently created planets, suns, pulsars, neutron stars, galaxies, globular clusters, black holes, and all the forces that bind them together - the large and small nuclear forces, gravity and electromagnetism - not to mention the quantum dimension. This is the God that the faithful tell us is in control of the very reality we inhabit and yet He is apparently incapable of demonstrating His own existence to the very people He created.
Yet given all the above, the faithful always demand no evidence whatsoever. They blindly believe in the existence of a God despite all physical and logical evidence to the contrary and then have the audacity to claim that it is the sceptic view that needs to be 'proven' - the null hypothesis having never apparently occurred to them...