Indeed, the less one archives the better.
As usual, for one reason or another I can't exactly get rid of everything, but being mindful about it helps a lot. Your messages are really straight to the point and your life experience shows, thank you :D
My home NAS has multiple uses and stores wildly different kind of stuff. That's exactly why I'm intending to "tier" it, somehow.
I'm planning to backup the absolute essential stuff onto a few blu-rays, hoping that they require as less space and maintenance possible, while the less important stuff stays in some spare hard disk or something, and the rest simply gets whatever's left.
This last part usually amounts to preservation of some software repository or Youtube channels I like, as both of those have a surprisingly low shelf life anyways (especially the latter). As you said entropy always wins, but hard disks' natural demagnetization will probably last longer than most of the "frivolous" stuff I'm preserving. One day, they will be the Internet Archive's "problem" and I will probably have helped quite a few people, so I consider that a win :D
Oh, wow... "blu-ray" haven't heard/seen that term in a while!
I never got past DVD's as storage medium. I'm pretty sure I still have a CD/DVD burner (is that what they were/are called?). Can't remember that last time I used it.
Am I remembering correctly that writing/burning one is a one-time even, i.e. you can't add more later? Was a file system created thereupon at the same time?
Wow... I'm pretty sure I knew such things once upon a time.. and now... *SCRAPHEAP*.... :-)