When I was younger, I was on a trip with my family through the rockies. On the way there, we saw some very beautiful mountain ranges. We looked up and saw really big rocks and boulders looking like they might fall flat on someone's head anytime now. My mom thought out loud "how come those rocks aren't smashing anyone?" My dad answered "god created the mountains such that they wouldn't hurt us."
My older brother then said, "you could think of it that way, or you could think of it this way. How long have that mountain and those rocks been there?"
I think it was my sister that immediately got it and said something like "whatever rocks that were going to fall had already fallen in the past. The ones that are left are there because they aren't likely to fall."
Same thing with our moon. If it wasn't in a stable orbit, we wouldn't be having this conversation. Trying to attribute this to a god is like attributing your existence to the tooth fairy. Out of the millions and millions of sperms, each carrying a different genetic combination, the right one just happenned to make it first to the egg that resulted in you. Would you be here asking this question if another sperm happenned to have made it there first?
Disclaimer:
Occasionally, owing to the deficiency of the English language, I have used he/him/his meaning he or she/him or her/his or her in order to avoid awkwardness of style.
He, him, and his are not intended as exclusively masculine pronouns. They may refer to either sex or to both sexes!