I'm not against those who work for sex, but the idea to earn for a living doesn't seem nice. IMO, sex should be for 2 people (or more for others who prefer polyamory) who wants to be intimate/romantic with each other. My point is money should not be the purpose.
Friend of mine used to be a whore. She says it has been the most fulfilling and fun job she has ever had. She got to meet many interesting people. And she also has a lot of funny stories to tell.
It was also fun for her that she could get tax breaks for underwear and other sexy clothes.