Advise needed!

Ok, first off I have always known what I wanted to do in life...and that was become an archaeologist (person who digs up bones)
I know a little weird but my dream is to find Cleopatra or some other famous dead ancient person.
But lately I've been thinking about it and here is what I came up with...it sounds selfish!
Completely selfish! I don't wanna help the world I wanna dig up bones!
I mean only rich-y fancy people do crap that doesn't help the world. But its all I want to do! I don't want to be a nurse...I'm not smart enough to be a doctor...I just wanna be an archaeologist...but I keep thinking that its the selfish way out of life....

Am I right...
I need opinions...nice ones...=]