Generally, the callgirls (and boys) this blog talks of are congressional creatures, corporate lackeys, and folks whoring power. But Tim's got a post on real prostitutes that's worth taking a look at. Now, it's not that I'm against the legalization and regulation of prostitution, but such a utopian prediction of it impact strikes me as wrong:
None of those problems--solicitation on the streets, sex in cars, condoms in the alleys, children being solicited--would be a problem if prostitutes were allowed to ply their trade in a safe, indoor environment.
I'm not really sure how you get to that future. If the world were a nicer place and the sum total of these interactions were frustrated Johns who just wanted a run-of-the-mill hooker experience, then maybe Tim's right. But when you get to strange guys in cars cruising seedy streets, propositioning children, screwing in alleys rather than motels, and doing unsafe things when safer alternatives already exist, things get a bit trickier. Some might want to harass, others might want to feel some power, still others may be exhibitionists interested in the thrill of getting caught, some are probably quasi-pedophilic...
Right now, if guys want safe prostitution, they can call certain escort services and be pretty likely to get their wish. But many of those patronizing prostitution aren't looking for quite so clean an experience. It's probably the case that legalizing the practice would clean things up a bit, but my guess is attractive teenage girls will still be propositioned, alleys will still receive condoms, and cars will still be the spot of choice for a sizable fraction. As Tim the libertarian well knows, when there's a market for something, providers will spring up to deal with demand, and, so far as I can tell, it's just not clear that moving the country's hookers into homes is what the market really wants.