Sex work will never go away. The only way forward is to make sure it can be done safely and legally.

Consider the sex workers who deal with mentally or physically disabled adults. Most people have sexual urges, and those who are unable to participate in society in the usual way of addressing their urges with a romantic partner or a one-night stand still have them. There are a good number of very professional sex workers out there who can provide these people with sex (often with specific expertise for the relevant handicaps) and generally significantly improve the wellbeing.

Are those sex workers doing something they shouldn't be doing?