Watch the whole debate (it's long but worth it)!
Note the "It's wrong" side won (in the sense of changing more opinions, the end vote was about even).
I must admit that I have heard before stats (even here on MERB?) about the proportion of women in sex work who were abused in their childhood. It would be disturbing to think this rate was high. I guess I just continue to hope that most girls fall into this for economic reasons and, while some may not be as fully aware as they might be, on the whole they are making what certainly appears to them to be a rational choice. I wonder how many would still feel it was a reasonable choice ex post. I think one problem is that the girls who are most likely to end up in studies are those who have suffered in this activity.
The "It's wrong" side keeps saying that there "must be a double-standard" cause there are almost only male clients. They seem to ignore the fact that the main reason, it seems to me, is that women aren't willing to pay for sex in general. I think men would offer their services to women for money but that women aren't willing to pay because the physical act isn't what matters to them. The fact that most prostitutes are women isn't, IMO, any proof that there is sexual discrimination in the rest of the work force.
Otherwise though the "it's wrong" side does make some very strong (and deeply felt) points.
Personally, I think the way the question is phrased means that The "It's not wrong" side must be the winner because it's implicit in any generalisation that it can be contradicted by a single counterexample. Thus, if ever there has been a mutually beneficial and 100% satisfactory exchange of sex for money then it can't ALWAYS, NECESSARILY be wrong.