People break their bodies doing other kinds of work and people don't seem too upset about that.
Some sex work isn't even very physically involved. Take some pictures in the shower. Video yourself rubbing one out. It's not all walking a dark, rainy, street in your underwear.
All workers should be unionized. Or maybe be in a worked owned cooperative. Capitalism will ruin everything eventually.
Everyone should have access to health care and basic needs.
Laws should be written with input what those they would bind and those they affect. Do sex workers want certain requirements? What do medical professionals think is safest? Laws should not be written to appease the nervous stomach of uninvolved parties.
But this is all fired from the hip because I haven't done any real research. My gut feel is that most arguments against it are inconsistent (eg: "it's degrading! But nevermind the job where they literally clean shit off the floor") or personal nonsense (eg: "it's a sin! But I don't care that your worldview doesn't say so")
IMO, sex should be for 2 people (or more for others who prefer polyamory) who wants to be intimate/romantic with each other. My point is money should not be the purpose.
This is your personal opinion and really doesn't justify laws backing it. It's not founded on anything. Also I've got bad news about how a lot of sex isn't intimate nor romantic.