I heard this story attributed to Mark Twain, but I can't find a verifiable source. Regardless, I think it's illuminating. In my own words:
Mark Twain is at a party, mingling with the upper crust, and he's talking to an obviously rich matron who is busy lamenting the death of morality. Mr. Twain interrupts her to ask, "My dear madam, your complaints are well-grounded, but I wonder if you would sleep with me for one million dollars?"
The woman replied, a bit flustered, "For one million dollars Well, who wouldn't?"
"Unfortunately," Mr. Twain continued, "I don't have one million dollars. Will you sleep with me for twenty?"
The woman became offended and said indignantly, "Certainly not! What kind of woman do you think I am?!"
To which Mr. Twain replied, "We've already established that; now we're just haggling over the price."
The point being that -- particularly in the context of the modern dating paradigm -- all women are prostitutes. Now, don't get me wrong: any man would have sex for the right amount of money as well, but the social structure clearly casts that situation in a different light.
A silly and baseless poll cites the following statistics, for which I will not vouch to any degree.
Porn industry statistics say that ususally a woman only makes one film. That filming takes one day and the pay is $1000. This is also the average per day rate for escorts. The hourly rate for escorts averages $250, about 1/4 the day rate. If a woman had sex as often surveys tell she would in a marriage, she would make about $25k yr. The average topless dancer makes $25-30yr.
The Onion even did a similar piece; although the original now requires premium membership to view, here's a mirror of "Housewife Charged In Sex-For-Security Scam".
AKRON, OH--Area resident Helen Crandall, 44, was arrested by Akron police Sunday, charged with conducting an elaborate "sex-for-security" scam in which she allegedly defrauded husband Russell Crandall out of nearly $230,000 in cash, food, clothing and housing over the past 19 years using periodic offers of sexual intercourse.
"It's the biggest scam of its kind I've ever seen," Akron police chief Thomas Agee said. "We're talking coats, dishwashers, jewelry, sewing machines, bathroom cleansers--you name it." ...
"This kind of thing isn't as uncommon as we'd all like to think," Ohlmeyer said. "A woman finds herself in a situation where she isn't employable. Or maybe she has interests like child-rearing, cooking and home-maintenance that keep her from getting a job. So what does she do? She cooks up a scheme to entrap a man using her body as the bait. It's frightening, but it happens every day in this country."
And of course the two oldest professions seem to be found in close proximity more often than not.