Teen idol Justin Bieber turns 18 in March with a long and ambitious to-do list -- to still be around at 30, to be as famous as Michael Jackson, and to avoid singing about sex and drugs. “Hopefully by the time I'm 30 people will remember me,” the Canadian singer told V Magazine in an lengthy interview. “I don't want people to just think of me as a teen sensation.” But the “Baby” singer said he was determined to maintain the squeaky clean persona that has brought him millions of mostly young female fans, and their mothers. “I'm never going to make myself so the kids and the parents don't respect me,” he said. “I want to be able to do what Michael (Jackson) did -- he always sang clean lyrics...I don't want to start singing about things like sex, drugs, and swearing.” Bieber, who has been dating Disney Channel star Selena Gomez for several months, added that he still had some growing up to do.