But it’s simpler than that I think: this is something that should be allowed, simply because if a woman (or man) wants to charge for sex, and has another adult willing to pay for it, why the fuck should the government interfere?

Beyond that, I cannot think of a SINGLE positive thing that comes out of it being illegal, and a whole boatload of negative ones that do. So we infringe on someones pursuit of happiness (and ducats), while accomplishing an increase in violence and illegal behavior, not to mention the law enforcement dollars wasted trying to prevent some dude from copping a blow job for a few bucks.