Because it beats working some minimum wage gig making maybe 200 bucks a week after taxes.
Most women even the low end providers can make that in an hour or two giving happy endings in some hotel room or selling a subscription to their pictures.
It's all about supply and demand. If you don't have an education beyond a high school diploma or come from a background with money then there are few things you can turn to other than the streets if you're a woman.
That's selling ass, the con artist game, or gaming the system for most.
I've seen what people will do for small sums of money now imagine putting a person in a situation where they are going to be destitute, not knowing where there next meal is coming, and unable to pay their bills.
Men will always pay for some azz, so it's a relatively easy hustle to get fast cash. I understand it, it's a means to an end.