I would have to say that a lot of atheists that I have met live their lives without any guilt, worry, or anxiety. According to atheists there really is no moral code besides the one that you make but I will say that many of them do have pretty decent moral codes.(they can't justify their morals though) Maybe it's them kidding themselves into thinking that they're better than us? In god's law however all are guilty and deserve punishment. Well hope that was helpful.