> A stream is programmed by somebody else and who knows if they are trying to please me or their partners.

That's one problem, yes. The other, more subtle, might be that one cannot really develop a personal taste. If you have a CD (or nowadays Vinyl ;-) you can listen to it even when the artist isn't in the stream any more.

I'm a fan of J. J. Cale's music for example, and have a number of his CDs (ripped for convenient mobile handling, of course) so can mix my own "stream" to take with me and listen to it when I'm in the mood. I'm a fan of Bach, Händel, Telemann too, own a number CDs of course, and when I'm in the mood for a relaxing bit of classic I can "stream" my own selection. So I decide what to listen to and I decide when to do it, depending on my mood.

Just some days ago I learned that many people sell their CD collection and you can find them in cheap batches on Ebay. When I suddenly remember a long forgotten artist (forgotten by me as time goes by), I will be able to grab a CD, rip it and listen to things I remember. Doing that with a streaming service? Tough thing, I suppose.

I do listen to music new to me (mainly on Youtube) every now and then, and learn about artists I didn't know, but if I really like enough of their work, I'll get a CD. Which, BTW, is not always easy for certain niche artists which either publish a limited set of vinyl and/or downloadable collections only nowadays.