Far and away the majority of women don't go into prostitution because they think it sounds like an interesting career. They do it because they have no other options or because they get tricked into it by a "boyfriend." Many are underage when they do so. Then they find it next to impossible to get out.  "Trafficking" also (see Wikipedia) refers to the commercial exploitation of women as sex  objects.  They are a commodity, being sold to make money for the trafficker.