I much much prefer physical media to streaming and I do think disc quality is better than what I get on Netflix or Amazon Prime or Disney Plus or Sky HD. I mainly watch discs for probably 80% of my viewing and the rest, when I watch films with my wife, they're on Sky or a streaming service (not high quality iTunes downloads or anything like that). I don't find streaming or Sky hard to watch, it does seem pretty good despite the fact that I think discs look better.The argument that streaming quality doesn't compete with discs simply doesn't wash.
i'm big into physical media but that's because I love artwork/ownership and all that archaic jazz. However, I've watched UHD streams of plenty of films I own on disc and I struggle to notice any difference.
Personally, i hate 'owning' stuff digitally & that's why I'll always buy physical. It is somewhat frustrating seeing certain other physical media advocates harping on about the quality differences though. If you've got a decent TV/setup then that simply isn't a factor...
However, I like buying and collecting films, making a decision to buy titles and then watch them rather that looking through 4 libraries to see what's on (though i could do this in advance, create a watchlist on each platform and just get through them that way). I don't, however, buy digital films.
The value of streaming is pretty impressive in terms of the amount of stuff you get and even with renting on Amazon Prime, it makes much more sense than spending £15 for a film you may only watch once or twice. However, this is a hobby, passion or interest and financial logic isn't really the driving factor.