Another real-life need for pages (and page numbers) is for easy reference in rehearsals. You don't want to wait while 100 people figure out how to scroll to a g

Another real-life need for pages (and page numbers) is for easy reference in rehearsals. You don't want to wait while 100 people figure out how to scroll to a given point without common reference points (although, yes, bar numbers would work, too). I also heartily agree with the commenter who noted that continuously-scrolling music would be disorienting in real use.