phillyb's post is a model of common sense. We need more like that in Audio forums.
There is no reason to adopt streaming just because it's the next big thing. If your preferred genre is Classical Music, as mine is, you are a lot better off having a well organized CD collection. Computer Music meta data and streaming services serve Classical Music very poorly.
I am currently burning my several thousand Classical CDs to a NAS primarily because I may have to vacate my ho9use for smaller premises in the near future due to health problems, and also because even if that doesn't occur, I'd like to prune the collection a bit because I get tired of feeling like I live in a CD warehouse. I am struggling with finding a good way to organize the cDs that have been digitalized. It's frequently faster for me to just grab the CD off the shelf than to find it on the NAS.
In terms of sound quality, I am biased towards having adedicated renderer vs an all purpose PC. I use Bluesound and Oppos to play the files from the NAS and I think that sounds better than playing them from My MacAir and Audirvana+ as the Media player. I personally believe that having a bigger power source ion something like an OPPo vs a PC makes a difference, but there is wide disagreement on that topic. You can achieve good sound either way.
A word of warning about Roon. It eats up a lot of computing power and works best on dedicated hardware. Roon acknowledges his on heir web site and came out with two dedicated Renderers for just that purpose.It also IMO is another program aimed at the Popular and Jazz listeners and doesn't offer anything special to Classical Music listeners