Prostitution has nothing to do with sex, it is the selling of one's abilities that can be given away for free.  The fact that every single being on the planet is a prostitute is the true demonstration of our evil, that we extort our gifts instead of helping one another by doing it for free.  This has a great cost, we are not free.  We create the classes.  We create the inequality.  We create the divide.  We create the war.  We prevent the peace which would unite this world in the togetherness a species requires in order to survive the test of space and time's infinity.