If we lived in an ideal world, I guess we wouldn't need them. However, this does exist and there is definately a need for them to be regulated and that these women be monitored in some way for health risks to the general public. I think legalizing them is a necessary evil. Even if you find somthing morally repugnant, ie prostitution, abortion, ect...that does not mean everyone will stop doing it. It is up to us as individuals to hold ourselves personally accountable for our own beliefs. It is the duty of government agencies (in this case the CDC - Center for Disease Control or Department of Health) to protect its people...sometimes from themselves.

i think the only way minimising evil is to invite them to live up to morales, i.e. to give them good education, to support our justice systems, to care for each other.
i mean it will never be ideal, but loosening the morales wont solve the problem.

just compare the generations: look at todays children, they are growing up with no morales, and they are the disaster!
they can easily kill, because they feel so, they feel some people annoying them, they come with guns or knives to schools. we starting to put our feelings "maybe so" ideas above the morales. and resulting into tragedies.

Please understand me correct: I do NOT plea in favour of prostitution. And yes, if there is any kind of force in it, it is humiliating for women, then it should be forbidden and punished. However, if a woman herself choose to do this job, who are we with all our morality to say she is unmoral?