Prostitution is a matter of opinion. I know women who're on dating sites JUST to get taken out to dinner. There's probably not always sex involved, but if you're being paid with a meal for your company, that sounds like prostitution to me.
IDK. I think it's still risky. You could do mandatory health checks, but still...
In the porn industry, performers have to take regular tests to make sure they don't have things like AIDS. I think legalized prostitution would be more dangerous. At least the porn performers get tested regularly. So if you're only having sex with other performers who are also tested, there's a lower risk of contracting something.
However, with prostitution, only the prostitutes are being tested. Meaning they're having sex with unknowns several times a day. And if they catch something, how soon until they can spread it and how long until their next test? And how many customers are exposed to disease before it's detected? And IMO, if you're having sex with prostitutes, you're not picky about who you have sex with, so the likelihood the customers have something is higher. So you've got prostitutes having sex with high risk people and then having sex with many other people. What could go wrong?
I think it's too dangerous. Although penalties should be reduced. If you're stupid enough to buy or sell and take that risk, that's on you. No need to further pile on by the law.