why is it when a Theist uses common sense it's then always wrong
I didn't say that at all, did I? I said common sense is wrong all the time regardless of who's applying it. It's a way to FORM a hypothesis, not a way to test it. In other words, it's a way to say "Well, common sense would dictate that the sun goes around the earth, as it always comes on on this side of the house and goes down on the other side of the house." What you're doing is stopping right here and saying "Because that's how it seems, and it makes sense to me, it must be right!" The right thing to do is to try to figure out if you're wrong or not (NOT IF YOU'RE CORRECT, this invites confirmation bias), then look at your results, again and again, and make a conclusion that is no longer "common sense," but supported by facts, is testable, reproducible, with instructions for others on how to demonstrate this for themselves if they're curious. You do literally none of this work, you just fold your arms, think you're super smart (way smarter than people who don't share your view, because their common sense isn't as good as yours) and pretend you solved it.
if there's a slight chance I'm right that God exists then what I've said is absolutely true. Everything I said about the processes of the universe appearing as if there was an intelligent factor and inanimate forces acting as if they have awareness is by all means accurate
So if there's ANY chance something is true, it is? Or does this only apply to your current proposition? How does this work? Let me give you an example. If I tell you that aliens seeded life here and it's only common sense that leads me to this conclusion, am I now correct?
or was it just accepted because people believed it and had no other options?
This is how all gods are created, you know. Like the Pantheon. People used common sense (a super race of invisible beings with powers over various parts of nature, that's why natural phenomena with no apparent explanation happen) and had no available way to test the hypothesis. In other words, it's six of one, half dozen of the other.