I think the entire Plex userbase would disagree. There's also a reason Google Play Music lets you upload your own music: Not all music can be found in "regular" streaming catalogs.
Technicalities aside: Also I like to think that buying albums (even if I stream them later on) makes the artist more money. And I want to support the artists I appreciate as much as I can.
I meant "normal" as in mass-market, not "normal for HN". I, probably like you, of course have a unix fileserver in my residence (as well as a metric ass-ton of vinyl, because it seems we are similar types of nerd).
Technicalities aside: Also I like to think that buying albums (even if I stream them later on) makes the artist more money. And I want to support the artists I appreciate as much as I can.