why take a cock up their ass when they could just get a woman to do it for them and be her pimp.
I think this is a really important point: it is not necessarily an issue of women's agency.
It is too often an issue of exploitation - be it the organised criminal gangs kidnapping and trafficking women, the gangs grooming vulnerable girls in Rochdale, or migsy's "friend" lending her money when she's desperate, and then getting her into prostitution to pay back the debt.
It is this exploitation that bothers me - if you legalise it, you are legitimising men buying sex from women; the sale of women's bodies becomes a more attractive and lucrative prospect for traffickers. Women become a commodity.
There is evidence from the Swedish police that traffickers do not really bother with Sweden any more - it is not seen as an attractive prospect to them compared to other countries where prostitution has been legalised/decriminalised. IMO, that wins the argument for the Swedish Model: criminalise the buyer, decriminalise the seller.