The Smithsonian Photography Initiative is devoted to the presentation and study of images, viewing photography as an art form, a record keeper, and a cross-disciplinary medium that encompasses science, history, popular culture, and more.

This is worth a look

http://photography.si.edu/default.aspx 

I found this film clip and it made me really think about value and costs.  I hope it provides as much food for thought to you as it did for me.  Sometimes it is something little like this which puts your life back into perspective.  I have been stressing over minimal issues which had a fishbowl affect good to see people not only get out of the fishbowl but create digital work which gets others out of that headspace!