What yardstick are you using to determine your level of suckage? Is it true? How do you know? If it is true, do you care? If you care, in what way do you care? Does it matter? If it matters, is it important? How so? Hopefully, the books you have read will help with the answers. You may not be able to answer all of these questions (and honestly, the answers don't matter too much), but they might serve to orient you.
I have read a fair number of the books on the list (and many more not on the list) and can truly say that I am a better human being for doing so, according to my criteria.
I just did some quick googling, and your assertion is the equivalent of owning 1/5 of a smaller sized Barnes & Noble, the smallest of which are around 3000 sq feet, or a fairly large detached 3 story home with maybe 4-5 bedrooms in a suburban area. Yes, Barnes and Noble doesn't organize it efficiently for storage, but for display, my point still stands that 10,000 books in a personal library is extreme.