SEATTLE POST-INTELLIGENCER: “American Idol” runner-up Adam Lambert has landed the cover of Rolling Stone magazine, where he talks about sex, drugs and his “Idol” experiences. The 27-year-old singer from San Diego acknowledges in an interview that he’s gay, and says it shouldn’t come as a surprise to anyone. “I’m proud of my sexuality,” he says. “I embrace it. It’s just another part of me.” Lambert says he was inspired to audition for the Fox network singing competition after having a “psychedelic experience” at the Burning Man festival in Nevada. There, he says, he experimented with “certain funguses.” “I knew that it was my only shot to be taken seriously in the recording industry, because it’s fast and broad,” he says of “Idol.” […] He says he worried that a public announcement would overshadow his singing, so he decided not to respond and largely kept his personal life under wraps on the show. “I’m an entertainer, and who I am and what I do in my personal life is a separate thing,” he says. “It shouldn’t matter. Except it does. It’s really confusing.” Lambert says he isn’t interested in being the poster child for gay rights. “I’m trying to be a singer, not a civil-rights leader.” MORE