The new Harlem Shake has nothing to do with the old dance invented some 30 years ago. The reason the new meme is called the Harlem Shake is because that's the title of the song that all these dancing videos are made about.
I'd garner that the reason it became popular is because people enjoy watching other people do stupid/funny dances in big groups at random places. And the reason people keep making new videos is because they love the idea of doing stupid/funny dances together as lighthearted fun.
You guys are grinches and probably stood at the sidelines of every dance you ever went to. :P













