I didn't say anything about what people call anything. I said that might makes right is all you have left if God does not exist.
Yet I am an atheist, and that is not my value.
There is no moral foundations in atheism, it has no moral doctrines.
Correct. I am an atheist. My moral foundation is elucidated int eh Affirmations of Humanism.
However Christianity does have moral doctrines and foundations, which are all based on God's sovereign and eternal nature.
Belief in a god is not a foundation for anything. It may be your premise for all other beliefs, but it is founded on nothing more than a claim and the will to believe.
Murder will always be wrong because God's nature never changes.
Murder is wrong to secular humanists. No god needed.
And the ethics of Christianity evolve over time.
The ethics of atheism changes relative to whoever is in power at the moment.
There is no ethics of atheism.
If you can't understand what we are and say, you needn't bother lecturing us what we are and must necessarily believe. If you do anyway, you should consider how you are perceived by those who recognize that you don't understand them.