Not to mention your backups take longer to run with all those additional files that take extra time and space on your Time Machine drive. It gives frustration a whole new definition when you are in a hurry and accidentally send an outdated file copy to your colleague, or attach an unedited picture just because you have managed to save the edited copy by the same name in a different folder. With multiple copies of the same files and folders, finding the right and most recent copy can become MacBook user’s living nightmare.
Not only that duplicates take precious space on Apple’s notoriously small SSDs, they also tend to slow down your workflow. Some of you own an Apple computer with 1TB drives and you most probably couldn’t care less about a few gigs of file copies, however, those of you with 128GB (or even 256GB these days) base models need to take storage management seriously. If you are using your Mac on the daily, then stocking up on dupes (intentionally or accidentally) is inevitable. Nobody likes having multiple copies of the same thing on their computer, yet we all end up filling our Macs with duplicates at some point. Eliminating Duplicate Files: Why Is It Important