Fornication is irrational, even to an atheist

Via Curt Jester, comes this post. John C. Wright is a sci-fi author, Christian and former atheist. He recorded many of his atheistic thought processes and repeats them for commentary on his journal, aside from writing new pieces. His most recent piece is the rational, logical, non-theistic argument against fornication. It is great philosophizing, though it includes many literary references which are beyond my experience.