On an idealistic level, I think it's perfectly fine and fair, women should be able to exercise autonomy over their body and sell it if they want. And the men desperately need the sex, so it's win/win. More realistically, I'm suspicious of whether it has detrimental effects on a woman's psyche (probably depending on the woman), but even in that case I don't think that justifies making it illegal. In fact, prostitution is actually safer for women (and men) when it's legal, I'm guessing with respect to both physical violence/homicide and STIs, and prostitution is going to happen whether it's legal or not.

The most unfortunate thing about prostitution is that a lot of women have no choice but to get into it to live, which could be seen as justification for making it illegal, but that doesn't make sense to me, because if you're not willing to give them money to live on for free, you might as well give them the choice to get it themselves...it's their choice, they obviously find the inconvenience of having to have sex with gross men they don't even like worth being able to live and have money.