EntertainmentFrom Bernard Ohanian Dr. Pepper Schwartz, AARP’s new expert for love and relationships entertained a crowd of serveral hundred people in the aptly named Casanova ballroom with a talk about sexuality and health that was frank, inspirational, and funny. Schwartz, the author of 16 books and a professor of sociology at the University of Washington, hammered home her point about the importance of a good sex life. buttressing her arguments by citing numerous academic studies. At various points throughout the …