It definitely doesn't exist, and it's not about believing, it's about proving... first, nothing can be created or destroyed, only transformed: means that the mass and energy in the universe (I call it massenergy) is a constant, because you can turn mass into energy, and in stranger cases, viceversa... This argument proves the universe was never created or destroyed, but transported... Big Bang was a white hole, expelling the ever-transported massenergy that the last black hole swallowed, meaning the end of all massenergy in the spacetime as we know (our dimension), will be because of the merging of all black holes, fact that was studied... (a when 2 black holes encounter, they turn into a more massive one, and gets catapulted... no one knows where it is catapulted, but that is still in the same dimension...)
Many of you talk about creating... but creation in terms of massenergy doesn't exists, so believing is for people who can't prove this... it's a cycle, and you can't stop it from happening...
About values... those were created by the human being to control a society, making a religion, all in attempt to make rules to follow, and to make us more "advanced" (and it's good for the creators of the religions, because they have followers, all already manipulated... doing what these people with ideas want to), but in my opinion, it would be better to teach the people how to prove everything, and to question everything around you, suggesting a better thing to do, to continue with the progress... so religion must be left in the past, and we should worry more about other stuff... such as what to do to advance as a society for real...
About the design of the universe, that's something that nobody decides, it's just a product of physics, chemistry and casualities, of course... nothing else... (note that casualities can't be made by something superior, because there's nothing superior than the power of the human intelligence to transform everything around him/her...)
Therefore, intelligence can't be given by a "GOD", it's a result of adapting to your surroundings and being able to transform them, which is called evolution... Positive proof of evolution is in the DNA of all living beings, having parts alike, meaning that we all differ because of specific adaptations to everything...
These arguments kill others, and prove there's no such thing as "God"...