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.
As long as all parties involved are consenting adults it’s none of my business what they are up to. Except that prostitution should be legalized in a way in which they get equal rights and protections to other professions. The only reason it’s illegal in many countries in the first place is likely based on religious Puritanism, which I do not think laws should ever be based on.