I know that some of the most dreaded words a designer can hear is, “Make it bigger!” We LOVE to play with white space which can really help a piece “breathe” and not feel cramped. So we’ll use a smaller font than the client might have initially desired. But c’mon, this is ridiculous.
Unless you’re laying out textbooks for the “The Derek Zoolander Center for Children Who Can’t Read Good”, I don’t know if you’ll ever have any reason to us a font point this small. Though maybe in CS5 Adobe might allow for this small of a font size.