Edit to add my opinion so I’m not just replying “I agree” to 90% of comments. I think it should be legal, properly regulated, taxed and viewed as a profession. I haven’t personally engaged in it but I have no moral objection to it. I do hate the common sentiment that it was the individual’s “only option” though.
In France, it’s a bit more complicated.
According to the law anything implying money with a sex worker can be considered as pimping (which is obviously a criminal offense). You have a friend who is sex worker and they buy you a drink ? You’re a pimp. You’re a sex worker and you want to rent a flat? That’s gonna be hard, because your landlord could be considered as a pimp.
Even banks refuse to open accounts to sex workers. A french porn actress (Khalamite) is an activist on the subject and made a YT video about that a few time ago.