I just spent a pleasant afternoon tidying up a lot of files that I'd downloaded and hadn't sorted out. Time spent doing that is not wasted. I can find the files that I want because I know where they are. I have a file system with clear labels that let me know what is inside the file. If you look at my studio, you'll realize that I label drawers.
I'm about to spend some time sorting through Hypatia, my Kindle. I've downloaded samples and haven't deleted them after I purchased the book. My directory of sample books is getting cluttered.