Here's one: https://www.independent.co.uk/voices/comment/the-majority-of.... "In fact, when you ask sex workers about their job satisfaction and working conditions – as a study led by Leeds University just has – the majority of them are happy. When asked to describe their work, respondents typically selected positive or neutral words. 91 per cent of sex workers described their work as ‘flexible’, 66 per cent described it as ‘fun’ and over half find their job ‘rewarding’.".

That aside, have you heard many stories where people have found happy and fulfilled lives as coal miners? As Amazon warehouse workers? Lots of jobs suck, but we don't ban them.

>it is because prostitutes are routinely destroyed by their work.

https://academic.oup.com/aje/article/159/8/778/91471 found a standardised mortality rate of 1.9 for American prostitutes (almost twice that of the average member of the population), similar to what https://ajph.aphapublications.org/doi/pdf/10.2105/AJPH.54.5.... found for coal miners, but we don't ban coal mining. For prostitution, violence was one of the "predominant causes of death", a situation that would be significantly improved were prostitution legal, as prostitutes could then rely on police protection without fear of being arrested for their work.