An “aesthetic argument for evolution”–I hope it’s obvious to you, just by looking at it that this is self-contradictory. When arguing from some fact to a worldview, one ought to be pointing toward a worldview that can accommodate the fact.
Richard Dawkins apparently takes an aesthetic argument as valid, yet as reported by Matt and Dana Higgins, he almost simultaneously supplies the material for his own refutation. They report from a lecture he gave in Austin,
[Dawkins says] “Evolution is more elegant than creationism.” In terms of evolution vs. creationism/intelligent design, he primarily argued from a point of aesthetics. His highly complex theories are preferable to the plain statement: “God did it.” Like saying that a couture dress is prettier than a dress made out of the living room curtains. Fans of “Gone With the Wind” may prefer the curtains. A matter of preference….
Later in the same talk he reportedly said,
Since there is no God and no moral reality, there is no morality that should be held by all persons at all times…. In “The God Delusion,” he strongly argues that morality evolves and changes with society (“the moral zeitgeist”).
So: apparently there is a strong enough argument for aesthetic realism/objectivity that we ought to take it as evidence on which to base our whole worldview. “Evolution is more elegant” is an objective fact, not a subjective opinion. But there is no moral reality. “Child abuse is wrong” is a subjective belief, not an objective fact. (Dawkins happens to agree with that subjective opinion, but that doesn’t make it objective in his mind.)
Does anybody see something being turned upside down there?