QUESTIONS I HAVE ABOUT HARRY POTTER AND THE WORLD HE LIVES IN

(I've only seen a couple of the movies and read zero of the books)
  1. Do his glasses ever fall off?
  2. What music do they listen to?
  3. Do Harry and his friends, you know... party?
  4. Does Harry ever do anything or does Hermione just do all the work for him?
  5. Is Ron holding*?
    *weed
  6. Why does justice never seem to be actually served in this world?
  7. Why so many twins?
  8. Does anyone lose their virginity over the course of the books/movies?
  9. Are there American wizards?
  10. Why does Voldemort have no nose?
    What gives?