Opinions on my drive to be an atheist

[Mudhammam]

Also as a response to my previous remark. If god does exist then I know that he has a reason for everyone of his principles. Even the ones that I don't understand. So I would trust him that getting divorced is a bad idea. But that is my dilemma, god or not, could I ever be happily married? So when I start thinking about there being no god, well it just makes that whole decision less murky

Here's my point, as simple as I can make it:
1) Does God exist?
2) Does God determine human morality i.e. the best possible life humans can live with one another?
3) If God does in fact determine such, how can you know that your conceptions of either 1 or 2 coincide with the right God or the right ethical approach?

These are all separate questions, and hypothetical knowledge of 1 or 2 doesn't strengthen a person's certainty regarding the others. You can say, I just believe such and such theology, which encompasses such and such ethics, or you can just say I believe in such and such ethics.