There is another angle: old laws are more balanced - for worse crime there's more punishment. People could compare crimes back then.
Newer laws are hysterical: the crime severity does not readily correlates with punishment severity. This is because of lobbying by various forces and because people DEMAND BLOOD on some issues which were brought [by same or other groups] in order to distract them from other issues.
Depending on the way it is done, it can be like gambling. That's what is happening in Japan, where children would spent enormous amount of money to get (artificially) rare virtual items, and the government had to pass laws to restrict these kind of games. I don't know if it's better or worse than prostitution, but it can have a clear negative impact on the society for sure.
http://kotaku.com/5908147/japans-youngest-self+made-billiona...
what do you mean? I thought without your body/mind, you can't do any work. So:
Offer your body to make money: lifetime
Offer your body to make money (prostitution): ~ 1 year (US, couldn't find South Korea numbers)
Offer virtual items to make money: max 5 years
Offer your body to make money BUT TAPE IT: Legal (to my knowledge)
Note, i'm not commenting on the morality or rightfulness of either policies, just pointing out this (to me) interesting fact