The worry about not being able to transfer your hard wrought computer files from one platform to another is no longer relevant. The internet has done away with that problem: if you can get it on the web you can literally port it to any other system.
I'm as much an enthusiast for the Internet as you'll find anywhere, but I do remember that all those uploaded files are still stored on a server somewhere . . . ok, maybe on several servers, with multiple reduncancy, and all manner of safeguards, but it's certainly not under
my control.
Furthermore, when I want to access the data I need special equipment to translate the digital coding into the English language and reproduce it on an electronic screen, so I also need to have an electric power supply. No doubt our brains will be eventually hard-wired into the "system" at birth thus avoiding such inconveniences, but until then I'll settle for printing it out in a form I, or anyone, can read unaided . . . except, as I say, for the reading glasses

Mike.