Name changed for this. You keep talking about NZ as though it's some haven filled with happy hookers, when really it's not. Domestic abuse is rife, rape and CSA is also rife and earns a slap on the wrist, and there are most definitely foreign trafficked prostitutes, as well as damaged young women who are taken advantage of, or do it because they're too unstable to hold down any other job, and it allows them to buy drugs to numb them to past trauma.
I worked in a brothel in 2004 after the law change went through in NZ (The Pelican Club). It was owned and operated by a man, and the prostitutes were technically 'hiring' the rooms from him - I can't recall exactly how it worked. There is a lot from that time that I've repressed/deliberately forgotten.
I was only just turned 16, had been sexually abused by my stepfather during puberty, and was heavily pressured into working in the brothel by my several years older boyfriend who wanted the money - and I adored him and thought I could handle it, in part thanks to the effects of the trauma I'd already suffered.
I altered my birth certificate (poorly) and they chose to believe I was 18, even though looking back I was very clearly a gangly, younger teenager, who in fact looked younger than my age. I was extremely popular amongst middle-aged men, who all had to have known I was underage - but then that was what they liked. It was awful, although at the time I would've insisted I was coping, and it didn't bother me (spoiler: it did). I spent months being used by men older than my father, and the law change didn't help me at all - it just made it easier for me to be pushed into it, in part as it 'normalised' the work.
Most of the women working at the brothel I was at were in their twenties and thirties and seemed hardened to it, but many of them used uppers and downers to blunt their emotions, and were clearly psychologically damaged. It appeared that many had similar pasts to me - filled with trauma, and the inability to hold down a regular job because of that, as well as a sense of self-loathing/lack of boundaries.
I'm sure there are a minority of women (probably the ones active in promoting prostitution and advocating for prostitutes) who are 'stable' and do well out of their careers in NZ, and aren't bothered by the 'job'. But from my experience, the majority are damaged individuals who only become more damaged through their work.
An added issue is that while they are working in the industry, most women will swear blind that they love the job/it doesn't bother them because denial is their coping mechanism. It's only after - often years after - that they will be able to admit, even to themselves, how badly it damaged them.
Anyway, if you read this far, my point is simply that people who haven't been prostitutes in NZ probably shouldn't chat shit about the system being marvellous.