Reason #1... to express yourself:

You may find out just how high you can go. This guys gets major props for going for it. I don't know how his ears work, but it's hard to believe that he thinks he sounds as amazing as he appears to think he sounds. I kinda want to see a video of the audience's reaction. Note: if you play this at work, your co-worker may walk over to your workspace and ask if you are watching a viral cat video...