I'm in favour. Here in New Zealand prostitution is legal, and because of that I have never experienced any prostitutes coming up to me asking if I want to have sex like they did all the time at the main street in Norway. Our red light district is Karangahape Road (aka K Road) and you safely walk there in the middle of night.
First off I don't see why men can't buy sex if it's done in a proper manner. Secondly, legalizing it takes away the black market because you rather want to have sex at a official place so you don't get STDs or get robbed. Thirdly, the prostitution industry didn't increase after decriminalization.
"More than 60 per cent felt they were more able to refuse to provide commercial sexual services to a particular client since the enactment of the law."