I have never paid for sexual services, never been to a strip joint or lap dancing club. Time, money, opportunity and inclination have never aligned.
In theory, I have no problem with consenting adults turning it into a commercial transaction, assuming it is a voluntary choice by a healthy, informed, non addicted person taking every sensible health precaution.
In practice, I have a daughter and it would break my heart if she thought that was a reasonable way to earn a living.
Like drugs, maybe legalisation would make it both safer and easier to help those trying to escape it, as well as reducing wider societal problems resulting from the criminality