You know what's ironic? Even a moral code that depends on believing in God takes mental effort to construct & to implement it properly in one's day-to-day life! IOW, a person can apply it in a self-serving, spur of the moment way, or in a reasoned, objective way. Having God at the center of one's moral code is no guarantee that it'll turn out good for human life. Witness the Taliban.
Another from the great state of Washington, my new home. You from Seattle?