Why does it seem that people are more sympathetic, or attentive to sex trafficking than human smuggling?

When you get below the surface, they are not far from the same poisonous tree. One has a person being controlled to provide sex for others, the other is someone profiting off the misery and desperation of another. Unlike traffickers who have at least a vested interest in their victim; a dead whore cannot produce any money, the smuggler will get a lump sum upfront and if he places his victim in danger by default or by abandoning them he/she doesn’t care, it is off to get the next load to smuggle. Both smuggling and trafficking lends itself to selfish greedy people using the misery of others to enrich their pockets. Overall, smuggling is far more dangerous for the victim but often the victim of smuggling is seen little better than the douche that took their money to smuggle them into somewhere, but those who end up parlayed for sex are not often seen as perps but victims entitled to more sympathy and understanding, why is that, do you suppose?