I've had a job in the sex industry, and it was the best job I've ever had, really.
No, I didn't have sex (I could have, I chose not to). but I was paid a lot, I was treated amazingly well, honestly, but for me, it was about the money firstly, and the fun, secondly, and it was fun.
I made enough in a week to pay for a two week holiday, I made nothing in a month because I decided I was taking a month off. My choice. I worked when I said.
It was a different country (Australia) so no problem with CV gaps, but I have no regrets at all and I'd do it again if I had my time again.
If someone really wants to have sex for money, and many of the girls I worked with did, then why not, so long as it is a choice.