I just had a moment where I downsized my RPG book collection. Do you ever weed out your collection? I find myself becoming a bit of a headless chicken, sometimes more interested in what the promise is that a book might hold, rather than diving in deep into the ones I already have. This superficial engagement with many books I find very unsatisfying. The books I cherish most are the ones that I have really sunk my teeth into, and I have a feeling that there is still a lot to discover in some of those that I haven't revisited in a while. Master the tools you have, rather than acquiring ever more barely used tools. Just wanted to air my thoughts, quite happy right now with my smaller collection of things I really cherish.
Do you organise your collection? My digital collection is mostly unorganised so I rarely look at them. I keep my bookshelf tidy and organised and I find that my books are more eye-catching. If I'm having a slow day I'll just pick one up and read a couple of chapters. Eventually you end up reading your entire collection.
I have both organised, but I just deem my physical collection "real". I only play the games & adventures I own physically. My digital collection is mostly cheap humble bundle stuff that I browse around in for fun or for inspiration for preparing my next session, just stealing small things here and there.
I have a copy of my digital collection stored on my google drive; so while it's loosely organized, it's also searchable! Makes it a lot easier to read in general, too - I've got two little kids and a full-time job, so it's hard to just pull one of my hard copies out for a while!