How is it pious? Why do you feel the need to reduce a perfectly value-free claim to something you can belittle?From what I can tell, your thesis is both vague and useless in working out how to view sex work and the best approach a society should adopt towards it. As I said before, it's a deepity, at best. At worst, it is pious nonsense.
At the very least, laws about sex must take into account the particular meaning that sex has in society, and not attempt to treat it like another economic transaction or a leisure activity.