CD or Streaming... am I missing out?

It must depend on your setup, I have a NAD M33 and stream Qobuz HR and it blows away my CD player so much so that I removed it. Admittedly the CD player was a Yamaha mid-level at best and the M33 is not. Even if they were simply equal (they were not) the vast selection on Qobuz would make CD a non-competitor.

Horses for courses, in my view.  Where I live, best streaming option is Tidal HiFi (no Qobuz here) and I have a large library of CDs.  So for me I still rely on CD (or vinyl) for familiar recordings but use streaming for new things.  I run an Accuphase DP 570 which pretty much outshines my Naim streamer.  On balance I don't think streaming is better for me than Redbook on my system.

streaming an identical recording at 16 bits / 44.1 kHZ and a CD of the same recording at 16 bits / 44.1 kHZ is sonically identical to my ears. streaming 24 bit files (Tidal Master MQA or Qobuz HiRes) through systems that are able to deliver those files bit perfect (without down sampling to 16 bit) are very noticeably higher quality (higher resolution, smoother, more dynamic, broader soundstage) than the same music streamed from a 16 bit file. having access to a streaming library of millions of recordings is a revelation. it’s all about the music.

sold my $3000 CD player over 12 years ago because ripped music and now streaming done right sounds better than cd and vinyl (sold all my vinyl equipment/albums over a year ago with no regrets. SACD is a different animal, but I haven't turned on my SACD player in over 5 years. 

Hi mglik1   I never heard streaming that was as good as a CD. Compare Nina Simone's "Baltimore" with the streaming versions - doesn't sound like the same session. Why bother? New music, I know. Good Luck!