A whore should be judged by the same criteria as other professionals offering services for pay -- such as dentists, lawyers, hairdressers, physicians, plumbers, etc. Is she professionally competent? Does she give good measure? Is she honest with her clients?
It is possible that the percentage of honest and competent whores is higher than that of plumbers and much higher than that of lawyers. And enormously higher than that of professors.
Robert A. Heinlein
The Notebooks of Lazarus Long