At least God gives believers the option to be moral or not. Forget for the moment forgiveness of sin. At least there is a choice. In my experience the subconscious social rules in big things and little like manners learned at mama's knee allow no choice at all. One can reason about them, but only in quiet contemplation not in the activities of life.
Good manners were drilled into this atheist right down to which fork to use for what course. I still find myself changing forks to eat melon after breakfast. I learned to eat Chinese food and use chopsticks as an adult and learned Chinese table manners along with chopsticks.
Now picture a very high class Chinese Wedding, as one of the few Euro-Americans at the wedding, the groom was far from friends and family, I was seated at the bride's mother's table with the groom's few family members. As a courtesy the table was set with English tableware. All went well until the duck course where I was visibly distressed to be unable to eat the 2 in. cube of meat and bones with my fork. The hostess suggested that if I didn't like it I should pass, I gathered my wits and very courteously asked for chopsticks so I could enjoy it as it was a special treat. That shut up the shrill voice in my head as my mother knew nothing at all about chopsticks.