when we talk about anything outside our universe it is mere speculation and nothing more (including why God may or may not have decided to create the Universe in this configuration)
People used to believe in many gods without any proof to base their beliefs on, some people still do. Some people believe in only one god, again without any evidence. So without any evidence there is either
A: Many gods
B: One god
C: No gods
To say that talking about anything outside of the universe "including god" is speculation, is itself speculation. Ignoring point C completely this approach rules out the equally possible option "A". What if the universe is so monumentally impressive that it took 2 gods to create it, or 10? Of course without proof of any of these then they are all equally possible.
But it seems that all one needs to do is to declare something as "outside our universe" and not only can we say that we cannot speculate about any of its properties, but we can also make as many assumptions as we like such as
1: It watches us
2: One day we will meet it
3: It will judge us
4: It created the universe
Whereas these points are indicative of an oppressed people. Held in some kind of slavery they yearn for a higher power who will one day save them of their slavey, that will one day turn the tables on their mortal masters and elevate slave above master.
If I recall correctly the Israelites were enslaved by the Babylonians, is that right? I've not looked into Judaism/Christianity much. But recent archaeological evidence from Israel suggests that they were still idol worshippers at the time and that the Torah was invented to give those people hope, telling them that the creator of the universe loves them more than anyone else, and that if they only "revert" to their old religion god will save them and their mortal masters will be punished.
Christianity grew during Roman occupation.
Matthew 20:16 - So the last will be first, and the first will be last.
I think the Abrahamic religions were well established by this point and there were (as now) probably quite a few people who wanted to be a prophet of god. Muhammad just happened to pull it off for whatever reason. But his depictions of heaven and hell are very indicative again of the needs of the people. Where in hell there is nothing to eat or drink, and in heaven there is everlasting food and water, and even plenty of sex with women who will only ever have sex with you and nobody else.
So in summary:
God was in the sky until we mastered the sky.
Then god was relegated to space until we reached space.
Now god is in a dimension which can never be found, outside of the rules of our universe, so that any difficulty we observe with the principle of creator god can be dismissed with "we cannot know."
One thing is certain though. If such a thing exists as the creator of the universe, either it didn't create a single religion on Earth, or if it did then it was having a REALLY bad day.
Topic: The Quest for Truth: Balance.