I know a couple people who have used cocaine habitually. Certainly, at one point, I knew, or knew of, several people who used it habitually. I wouldn't say "a lot" of people are using cocaine, but I do think cocaine use and meth use are both probably more common than quite a few people realize. Because if the person isn't telling them they're using it, then they're often not guessing that person is using it because they expect really extreme behavior from all people on stimulants based on movies and television.