And who created the god that created god?
In theory, a god has always been around.
Why is it matter can't come from nothing, but a fully formed god is perfectly reasonable? Why can god always have existed, but not the universe?
Only something "supernatural", that is governed outside of the laws of nature, would be able to have existed forever.
The laws of nature exist only within human comprehension. Anything outside of the laws of nature exists outside of human comprehension. We have a word for that. Its God. A Dutch junkie-poet once wrote a poem titled 'The Universe'. And translated it goes:
The farther we looked
The larger it seemed
Any question we solve breeds a horde of new questions, and adds to what we don't know. We call that great unknown God. Scientists are working daily to add to his Glory.
I like the Bible. It has all the basics of philosophy and its printed on very many very thin papers. Serves as a loo roll and as a Rizla. And yes we can wipe our asses and smoke our spliffs because we all have the message in our heads already. Talk about decentralized.