I actually do get a little existential about the mouse, but I feel like its part of a larger trend that frustrates me about the bifurcation of computers into a category designed for producers and those designed for consumers, and the false and damaging dichotomy that this creates. At the same time that Rasperry Pi, Arduino, open-source coding languages, linux and other maker-oriented systems are enjoying a surge, mainstream, hermetically sealed, controlled-environment devices dominate and pass as "computers."
As long as the former exists, the latter shouldn't be knocked, to some degree, but, along the same philosophical lines that make people bristle at the idea that tailored search results will keep them from accidentally exploring things they didn't know they didn't know, computers that hide all the guts keep people from discovering the guts, even if they started out just wanting convenience.
Full disclosure, I wrote my Master's thesis in TESOL on how creating, organizing and playing with directories and file hierarchies can be an excellent opportunity for language and logical thinking practice, as kids make decisions about how to organize image, text, notes, favorite links and other assets on their local computer. It was a strange moment when I realized I needed an app to view the location of files and folders on my smart phone (Android no less), and that Windows 7 introduced and prioritizes "libraries" as a file interface that pre-organize files and obscure their location on a drive. Sure, the easy answer is, "why are you using Windows, Android, iOS, etc... in the first place?" but I'm not really talking about me, I'll be fine.
This also connects, for me, to @codinghorror 's post the other day about tiring of apps, and the daily clanging of the web's doth knoll. Sure, apps are still software anyone can write, but I never would have written a piece of software had the web not made it fast, easy and exciting to dip a toe into writing a structured piece of text and having it appear as something more on the screen. When Sid Meyer said something akin to: "Stop sending me game ideas. If you have a great idea, learn some C++ and get cracking," my response was "yeah, right," but when my step-dad bought me a domain name, and said "learn some HTML" I saw it as less of a hurdle for whatever reason. App environments are also created and curated to boost a specific platform, and to get the app count competitive with other platforms so the the device is legitimized and survives. A totally different philosophy from the Web, where everyone should play because information is amazing, and wouldn't it be great if everything was connected.
In the end, I hope that the wall between consumer- and producer-oriented environments and devices doesn't become so thick and high that kids who never though of themselves as "computer" people can still accidentally discover themselves as just that.