Whether or not they are attainable, is a matter of record, to be sure. Certainly, after 25 thousand years, or more, of human societal coexistance, it is without argument that human beings, generally, are inherently short sighted, self possessed entities, who are individually capable of, and inclined to embody and variously demonstrate every aspect of evil which we have come to describe as such in our vocabulary. Having done this, it is easy to point to any number of atrocities that have been committed in a smug attempt to prove your case. Otherwise, you do not speak for all of humanity, and all you have are examples of the behavior of some of humanity. I see a constant effort, on the part of athiests, to emulate and implement a moral standard which is comparable to the Christian ethic, without success.
History is full of like failures.
The most ancient remains of cognizant human beings are always accompanied by evidence of their belief in God. Therefore, to say, sarcastically, that revelation is the supposed origin of any knowledge is to betray ignorance of archaeological evidence. So, then, we have the codes created by men attributed to gods. Then we have men, acting on the false claim of being representatives of the god, meting out the judgements and the punishments for disobeying the imaginary god. When the falsehood is found out, I promise you there will be unrest and revolution.