How many RPG books are too many?

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.