Sex exchanged for money may not have the same value and meaning as sex exchanged as a gift among lovers. Yet, it does not follow from this that paid sex is without value. The value of paid sex is clearly subjective, and may be derived from its ability to provide sensual pleasure, sex education, and relief from stress, boredom, or loneliness. It may be less meaningful and enjoyable than sex with a romantic companion, but when the latter is not an option, paid sex may be an acceptable substitute. Since people have different expectations from paid sex than non-market romantic sex, they are not likely to suffer emotional and psychological damage from the former.  Individuals who are not in monogamous relationships, and who have multiple sexual partners must take special precautions to protect their physical health, whether money is exchanged or not. Sex work does not pose additional health risks that are not otherwise faced by sexually active but non-monogamous individuals. There are precautions that all sexually active people can take to protect their health, such as rigorous condom use and regular health exams. Moreover, societies can promote education about STDs and how they are transmitted and detected, so that all sexually active individuals can learn how protect themselves.  Markets in sex do not in themselves precipitate harms or pose a public health threat, rather ignorance about sex and STDs, and barriers to health care and prophylactics such as condoms, are responsible for the harms of sex.