Reformat syndrome
You know the worst thing about owning an Apple product? They tend to work all the time.
Hey, quit giggling. For the easiest proof that any activity repeated enough times becomes a habit, consider that I’m apparently compelled to reformat my computing devices at least once every six months. When OS X Mountain Lion came out, I reformatted. I do it to my iPhone and iPad every time there’s a major version number upgrade. I’ve even done it to my Xbox 360, moving my saved games onto the internal memory, wiping the external hard disk, then moving my data back and setting the machine back to factory specs. All of it’s totally pointless. My devices run just as well as they did before, but now my brain can rest.