Great thread! I've just read it through from start to finish.
I tend to mix physical media, files and streaming. The CD, for me, is an odd proposition nowadays. It is still the main way I add digital music to my collection but - like many others - I rip and store. I feel secure knowing the discs are there as the ultimate backup. The discs themselves, though, barely see the light of day. It would feel odd to me to play a CD having ripped it - as the ripped file is identical. (Not quite the same as archiving your precious and delicate LPs to tape on your Nakamichi!)
In the digital world, though, I'm quite happy to play DVD-A, SACD, Blu-ray etc. from disc - and I'm similarly comfortable with LP records. These formats are all a bit more fiddly to archive/rip than CD of course.
I think the success (or otherwise) of streaming and file platforms is the UI/UX - with a good interface the experience can/could be as nice as handling and selecting from your LPs. The streaming interface on my old Cambridge streamer was awful, ugly and clunky (nice as the device was in terms of sound) and I longed for my old Meridian CD player back (or to return to iTunes with my Mac Mini!).
When I tried (and bought) Roon - with a Raspberry Pi 3 and Meridian Explorer 2 as an 'endpoint' - I realised this was where I wanted to be! Tidal albums are integrated with my collection, so I can stream from my files or the internet using a single interface - which pulls in metadata from the internet so I can explore connections between artists and albums in my collection. Roon uses this metadata to provide a 'Radio' feature that creates remarkable automated playlists - and can use DSP to level the volume if you wish. But I find I tend to listen to albums - and it gives me just as much satisfaction (although of a very different kind) as listening to vinyl.
That said I'm currently listening to Sgt. Pepper's on Blu-ray - go figure!
Technics SL1210 MkII / SME 309 / Timestep PSU / Achromat / Denon DL-304
Phono stage PS Audio NuWave Phono Converter
Lossless / MP3 / Tidal > Roon > Bryston BDP-1USB > Marantz NA-11S1
Marantz UD7007 SACD/Blu-ray/DVD-V/DVD-A
Toshiba BDX1200 Blu-ray player (Zone A & Region 1)
Audiolab 8200AP pre-amp/processor
Power amp: Arcam P7
B&W 804S stereo (bi-amped), HTM4S centre, CDMSNT surrounds (5.0)
Sennheiser HD 700 headphones
Panasonic PT-AT6000 projector