Having said I mostly stream, and having made fun of
@bladerunner6's plan for septuagenarian wealth, I should examine the economics.
My particular "pay forever, own never" plan currently has ~35,000 items in an Apple Music library. Let's say 10-20 tracks per album, so up to 3500 CDs. When I bought them new in ancient times, they were AUD $20-30 per CD, so maybe $70,000 to "own" my current lot on physical media. Compared to Apple Music at $17.99 monthly for the next 50 years so approximately $10,000 of today's dollars—the price will creep up, and money will be worth less yada yada— it isn't a bad deal.
Of course, I'd not have bought quite that many CDs. There was a thing called radio, which I really didn't like much, JJJ and FBI-FM notwithstanding.
There's the odd downside. Grimes updated the artwork on streamed versions of
Anthropocene which was odd when they just changed (I liked the original versions better). And even though I downloaded CouCou Chloe's
Doom, my Music.app has just decided not to play it (religious people who don't understand tolerance in a secular society nixed that one). And X-Ray Spex discography disappeared more-or-less entirely. So sometimes you do want to own stuff. No one's stopping me doing both.