Argument: Cloning-reproduction would never compete with sex-reproduction
Nathan Myhrvold. "Human Clones: Why Not? Opposition to cloning isn't just Luddism--it's racism." Slate.com. March 14, 1997 - "Whatever the temptations of cloning, the process of natural reproduction will always remain a lot more fun. An expensive and uncomfortable lab procedure will never offer any real competition for sex. The people most likely to clone will be those in special circumstances--infertile couples who must endure IVF anyway, for example. Even there, many will mix genetics to mimic nature. Another special case is where one member of a couple has a severe genetic disease. They might choose a clone of the healthy parent, rather than burden their child with a joint heritage that could be fatal."