Downloading from YouTube or Spotify is still piracy. And those sources offer mostly shit quality far removed from the artist's intent.
Believe it of not, there are things that aren't on Spotify, YouTube, TIDAL, Apple Music, Bandcamp, or any streaming service. Sometimes when a streaming service does have a song or album, it's either not the best quality or only a radio censored version available, even if Spotify claims it's the explicit version. And that explicit tag feels like a slander because the original intent should be default and the radio edits should be the one's with the CENSORED tag.
There is great music out there you can't purchase or stream a digital release of.
There are old and often played CDs in my collection that can't be ripped properly (by me) for one reason or another.
There are some really high quality vinyl recordings out there, done by people with better hardware and more skill than I. Again, many of these vinyl releases are not available in any other format and are no longer available for purchase anywhere.
The real primary reason I got into it, in the long ago times of Napster, was that I liked to make mixtapes/discs. When radio was no longer playing songs I wanted on those tapes, the wilds of Internet was the answer.
I still regularly support the artists I like as directly as I can: buying albums and merch directly from them at shows or their own websites. And I spend more of that money on more artists and especially less popular artists specifically because of the habits listed above.