The point is we have laws in place to prevent it, unless you're being trafficked and forced to pay off gangs that transported you over the border, and no rights to ability to deal with an abusive situation.

The fact that you are okay with the defacto slavery/trafficking because "its always happened" says a lot, and why I generally dismiss these arguments, because at the end of the day, you just want to pay less for things, while you live in the nice part of town.