Decriminalisation opens the door to increased use of sex workers, leading to a culture that enables and encourages sex addiction
As our society develops the notion that sex is allowable as a commodity, we begin to encourage a culture of sex addiction and instant gratification. Prostitution is one of the ways this culture is bolstered. One of the "oldest professions," prostitution has always played a role in shaping societal expectations towards sexual services and instant gratification. In the modern era, with the accessibility of pornography and the internet, the need for instant gratification has increased, and while societal expectations towards the availability of sex have shifted, paid sexual services like prostitution are lauded as viable options for achieving that gratification. Pornography is equally at fault for enabling this culture, but the porn industry has evolved with more protections in recent years than prostitution has, in large part due to criminal status. Also, there is a notable increase in the number of clients who crave actual intimacy, not just sexual gratification. In those cases, sex workers are being used to fill an emotional void, likely because misinformed customers are succumbing to the idea of instant gratification. The prevalence of sex work in society contributes to the harmful psychology behind instant gratification and sex addiction.
It should be on those using sex workers to curb the culture of sex addiction, rather than the workers themselves. So long as there is a market, there will be suppliers. If the product is to be cut off, it should be due to a lack of demand, not arbitrary criminalisation.