On the basis of sheer logic, there has to be SOME being to exist that created everything. To claim otherwise is to literally claim that there was nothingness—whatever that MAY BE considering existence wouldn't even be defined—and then the universe came to be. Not only would it have just magically come to be, but it also managed to then define an infinite number of possibilities, have certain possibilities come together to form physics, and then have complex ways of even forming what we call 'mass.'
To claim such a thing not only lacks credible evidence, but can easily be argued to be MORE illogical and devoid of sense than claiming a higher being made everything. One being, that started the domino chain that formed the universe, is a far more coherent and logical assumption.
Now obviously, what the being IS, is up for discussion. It could be something that created the universe and then never cared for us.
I personally claim that it has to be the Abrahamic God, considering that the religion's rules that were provided to us in these religions led to a much more happy society, where outright evil was completely outlawed, and things were more just (not totally, but certainly more just). There is nothing unequivocally harmful in them, and it manages to nail what human nature is pretty well. Not only that, but all three of the religions share a 90% commonality despite somehow being millennia apart from when revelation was first provided. Meaning, a claim that they were all original the same, but human fallibility and greed led to them being somewhat corrupted over time—is a quite strong one. God has been consistent with his scriptures, and hasn't ever changed the rules of them despite thousands of years having passed.
Just basing off of all of that, I believe that it's either Islam or Christianity.
