http://www.aljazeera.com/indepth/features/2015/06/magazine-undercover-sex-worker-human-trafficking-150610072623672.html
Anyone who oversimplifies how the system operates is doing a disservice to the many moving parts of this perfectly designed machine. It runs on profit.
It has nothing to do with human life. In fact, that's not even a discussion of concern.
All you have to do is spend enough time around traffickers and pimps to know how they perceive the women they sell.
They are cattle, cargo, a commodity to be used and resold as many times as possible.