Yes, many naturalists deny that objective moral values exist — that our moral impulse is nothing more than the product of a blind evolutionary process that selects out traits that enhance survival and reproduction. I such a case, morality is merely subjective. However, non-theists can and do endorse objective moral values — that rape or child abuse is wrong. These nontheistic moral realists will tell us, “You don’t need God to be good.” Yet the deeper question is, how did we come to be morally responsible, rights-bearing beings? Since all human beings are God’s image-bearers, they not surprisingly recognize the same sorts of moral values theist do. The basic issue, tough, is this: why think humans have rights and dignity if they’re products of valueless, physical processes in a cause-and-effect series from the bing bang until now? The more plausible context or scenario is that human value and moral responsibility come from a good God who created us as intrinsically valuable, morally responsible creatures.