No password, hard to make copies, takes up more space in my bag, can't easily move things around or rework once you've put something on the page, end up with a

No password, hard to make copies, takes up more space in my bag, can't easily move things around or rework once you've put something on the page, end up with a stack of notesbooks that need disposing of, harder to file and easily look up things from a certain date or category.