Morals are behaviors. If morals aren't real, then neither are behaviors. See how silly that seems?
However, if we recognize that morals aren't absolute by careful observation of nature and applied logical thinking, then it becomes obvious that, like shaking the hand of everyone isn't a good idea (as it offends in some cultures), it depends on the society and circumstances you are in.
Atheists are just more prone to recognizing that there are few absolutes in life, and morality, like etiquette and politics, is not one of them.
However, if we recognize that morals aren't absolute by careful observation of nature and applied logical thinking, then it becomes obvious that, like shaking the hand of everyone isn't a good idea (as it offends in some cultures), it depends on the society and circumstances you are in.
Atheists are just more prone to recognizing that there are few absolutes in life, and morality, like etiquette and politics, is not one of them.
