Why Do We Obsess Over Celebrities?

Unless you have been living under a rock lately, you know that every radio station, TV channel and online source is talking about Charlie Sheen and giving their thoughts, opinions and two cents. We have an eye on his interviews and follow his tweets to see every word he says.  Why?  

Why do we rush to the TV or the computer to see what celebrities are doing, saying, tweeting and such?  Sometimes I think it is the drama.  If we do not have enough drama in our own personal lives already we tune in to partake in the drama of others.  And celebrities are the ones whose lives are put on display constantly, by either themselves or the media that chance them.  

It is what people love or else every other show in TV today wouldn't be a reality show.  But why do people love it?  Weigh in and tell me.  Leave a comment if you like.