No more paper!!!!!!!

About a month ago I got a Tablet PC with the notion of using it for my online classes. So far its been great to read off of and write notes. All my class notes are in PDF so I use PDF annotator to add comments to it, just as I would a regular sheet of paper. By the end of this class it will save me time (not having to print everything out) and money (not having to buy ink) and I feel really good about not having to use any more paper. I also feel more organized with this system because all the PDFs are already named for me and I dont have to punch and bind all those papers. Why aren't more people doing this? Maybe all the teachers should provide students with the option of using electronic documents for handouts and assinments. Unorganized paper spreads across my desk like the plague!