The morals are made up by humans, and it is an evolutionary survival tool in the same sentence? Which one is it? Also, "universally wrong" is what is known as objective morality, which is in opposition with subjective morality, i.e. "humans made it up". Again, which is it?
The weird thing is they assume since they do not have these urges or desires, it must be evil and wrong because they think their urges and desires are universal and if your not within that box, your automatically wrong. Once they get morality is subjective to time and differences in societies, they will understand why it was ok to bury children in saudi arabia or to sacrifice witches on a stake or to treat midgans like animals!!! Notice how these are all changing, if it was all universal we wouldnt see any variations for a start, everywhere would look the same in terms of morals.