On the subject of discs, I just realised I can't actually remember the last time I used CD / rotational optical media of some kind, I honestly can't! If I had to guess what the reason for it might have been I'd probably go with some obscure band (music) that only had physical distribution - but generally in those cases (no pun intended) I'd most likely but the CD to support the artist then check on what.cd (R.I.P) (pun slightly intended) and saved myself the pain of finding an optical drive and ripping it into my collection. It's likely it would have been something like that I think.
Sorry for being a bit off-topic there but it was a bit of a 'oh, wow!' moment.