It's a combination of Spotify's fantastic weekly playlists, keeping up with new releases, and exploring new genres.
You are essentially listening to 40 new songs per day.
Last week I found a Russian artist in a playlist I follow and I listened to all their albums. I don’t know how to pronounce their name nor the title of any of their songs, but it was a nice background music for coding since I don’t understand a thing of the language.
I don't want to have thousands of different songs floating through my ears. If I'm in the mood for something new, I'll get a recommendation from a friend or an online service, listen to a couple tracks then decide if I should invest more time in the band or just forget about them. Interestingly after a few streams of albums it on Bandcamp, they nag you to buy and it's usually about the time where "yeah, you know, I probably should add this to the collection". Unless finding new music, I always listen by whole albums as the bands decided was best to listen to the tracks, not individual songs--so the numbers you bring up just aren't something I care about. Whole albums are cheaper and if only one track is good on an album, that band not really something I'm interested in.
In 20 years spent even more on digital.
I have tons of things not available on streaming.
Regardless, the fact my listening gets to be an isolated activity, the fact no one can take it away? Priceless
Over the same period, I gave exactly €1200.93 to Spotify [1].
[1] note: it’s a pure coincidence that this is ~ €10 * 12 months * 10 years; the price has not always been the same.