Rock singer Melissa Etheridge says she used Medicinal Marijuana while recovering from Breast Cancer and supports Californiaamp;rsquo;s Proposition 19, the November ballot initiative that would legalize pot. Etheridge said as she underwent chemotherapy she was given a choice of using 10 drugs with various side effects or a natural solution. Although referring to herself as a medicinal marijuana user, the singer said she would like to see pot become legal because she doesnamp;rsquo;t want to look like a criminal to her children anymore. She wants them to know this is a choice that you make as a responsible adult.