Human traffickers must be some of the most loathsome people on this planet.  Some may think they are doing good things trying to get people to a better place, but these traffickers do not see people and are wanting to help them.  They see them as money, they take advantage of them and take every single thing they can from them while promising them a better life.  They do not care about the safety of people and are just trying to maximize their profits.  The only reason they wouldn't just get rid of the migrants out at sea after taking all their belongings is it may be bad for business.