You know as a very conservative granny-lady I agree with you. I have never understood why a woman can carry a baby for someone for money, can literally sell her own baby for money, can kill her baby for no reason (after all it is her body), but she can't have sex for money.
Don't get me wrong, I disagree with the morality of it, but the legality or illegality of it I just don't see. Why has some smart lawyer not taken this to court on the basis of it is a woman's body and she has a right to do with it as she wishes.
Now we can debate the ins and outs of a sting operation, but prostitution should be illegal for health reasons as well as moral reasons. In addition, prostitution tends to bring with it all sorts of other crimes as well, be it drug possession, assault, murder, etc.
Prostitution is a violent business, and if a community wants it out, they should have the right to make it illegal.