I somehow doubt you mean that literally, as there is nothing negative about this honorable profession. Perhaps you mean something else.. some other related malign of the gender. In any case your crude statement tells us much more about you than about the ladies in question. And it is not to your credit, I might add.
You sell me short and cut me the core, friend. Prostititution is not just the oldest profession but one of the most honest!
First, I do mean literally that many journalism students I knew in college indeed sold themselves for cash. Do you think I would have used that term in jest? I found their industrious use of their skills to be a credit to themselves.
Additionally, I would have no problem with the fact that they acted in such a way if that was their chosen field. If they majored in the prostitution arts I would applaud their prowess. However, rather than follow what they were good at and could profit from they entered the career path of journalism. My issue is not with their gender, narrow minded man, but instead with the fact that they did not follow the path that would have allowed them to make the most money and to help the most people.