Originally posted by @tom-wolsey Indeed. If morality is subjective then there is no morality. Many atheists on the one hand will say there are "universal moral principles" we should all follow... no killing, no hurting others, etc., but on the other hand claim they (atheists) have no written code of ethics. But subjective morality causes a contradiction with at least someone, on any " ...[text shortened]... e neighborhood? The city? The state? Country? World? And we're right back where we started.
There is a large variety of ethical theories that do not make explicit reference to any organized religion, for example various consequentialist schools of thought, and natural rights theories. Atheism is not a moral code, it is just the absence of belief in the supernatural.