Is This Really That Important?

We've all heard about the Michael Phelps ordeal in the last two weeks; the press have been talking about it non stop. I was looking over CNN and I saw a headline on the case. Apparently, there is not enough evidence to charge Phelps, and also he only admitted to being sorry for his "inappropriate behavior". I realize that an Olympic athlete should not be smoking marijuana, much less get photographed while doing it, but is this really that much important?
Go to any high school or college campus and you will see worse actions than what Phelps did. I feel that it really should not be on the level of national news. Why hasn't the Los Angeles train station shooting been in the media for some time? That instance is arguably one of the worst examples of police brutality. All that I've seen were the initial reports that came shortly after the event. Maybe the media should focus on issues that are of a more serious nature than an athlete getting high.