My campus library is small and much of the collection is old. I have ordered new books which seem appropriate and necessary, but the library's budget is also small, so I have tried not to be too demanding on that score. In particular, I have tended to order things that I think will be useful for students, and have generally not ordered things that apply only, or primarily, to my research. This has put me often at the mercy of interlibrary loan services.
The ILL service has been fine in that it gets me the materials I want. The major problem is that I don't get them for very long. In the fall I ambitiously ordered six or eight books at once, then couldn't get to them immediately, and one by one they all went overdue, and my ILL privileges were revoked until I finally returned all the books.
Most recently I ordered just one book, which proved to be so dauntingly large that I put off looking at it for a few days. This was, of course, counterproductive, especially since once I started going through the book, I found it to be not only thick but dense; every chapter is full of ideas and information and requires some thought to grapple with. It has not lent itself well to skimming. The book is now overdue and I'm only a small portion of the way through it... sigh.