why teenagers like to play basketball football and vollyball

why the teenagers like to play basketball football vollyball?
1) because these ball games are group games. (團體活動)
2) youngster can play together to improve their group lifestyle. (團體生活)
3) they can talk about the super stars & exchange skills & latest info since these games are so popular today. TVs are showing everyday.
4) 如你不知 Beckham, C. Ronaldo Kobe Bryant or Lebron James 是誰? you are "out".
Please remember Tennis, table tennis, badmington etc are also good sports, but these are individual ball games (個人活動).
--- 己見 ---