People who don't believe in santa are called adults ;)
A God is different, it isn't really a fairy tale like the tooth fairy or santa, they were made up for children.
A God or the possibility of such a being goes much deeper. As Quantum theory originator Max Planck believed that
“science cannot solve the ultimate mystery of nature [because] we ourselves are part of nature and therefore part of the mystery that we are trying to solve.”
Despite the complexity and variety of the universe, it turns out that to make one you need just three ingredients. The first is matter — stuff that has mass. Matter is all around us, in the ground beneath our feet and out in space. Dust, rock, ice, liquids. Vast clouds of gas, massive spirals of stars, each containing billions of suns, stretching away for incredible distances.
The second thing you need is energy. Even if you’ve never thought about it, we all know what energy is. Something we encounter every day. Look up at the Sun and you can feel it on your face: energy produced by a star ninety-three million miles away. Energy permeates the universe, driving the processes that keep it a dynamic, endlessly changing place.
So we have matter and we have energy. The third thing we need to build a universe is space. Lots of space. You can call the universe many things — awesome, beautiful, violent — but one thing you can’t call it is cramped. Wherever we look we see space, more space and even more space. Stretching in all directions.
The instinctual question is where all the matter, energy, and space came from — a question we hadn’t been able to answer with more than mythological cosmogonies until the early twentieth century, when Einstein demonstrated that mass is a form of energy and energy a form of mass in what is now the best known equation in the history of the world: E=mc2. This reduces the ingredients from three to two, distilling the question to where the space and energy originated.
Generations of scientists built upon each other’s work to deliver the answer in the Big Bang model, which holds that in a single moment around 13.8 billion years ago, the entire universe, with all its space and energy, ballooned into being out of the nothingness that preceded it.
But as Stephen Hawking stated before his death, science may never explain where these ingredients came from so the possibility of a force (or a God) remains a possibility, nature is ruled by laws, which are constant and cannot be broken (unlike human laws).
I don't know if a God or force ever existed, I'm simply not clever enough, none of us are, even Hawking wasn't. My question about dinosaurs was me being a bit daft and starting a kind of light hearted thread about God and why he allowed humans to carry on but not the dinosaurs. A joke thread. ;)
Albert Einstein himself stated "I'm not an atheist, and I don't think I can call myself a pantheist ...
I believe in Spinoza's God who reveals himself in the orderly harmony of what exists, not in a God who concerns himself with fates and actions of human beings".