My wife and I have a large collection of books, 2 wall to wall bookcases. It's a lot, and we've also donated a lot of books. We buy them all the time. And no, we haven't read all or even most of them. We've probably, collectively, read about 50% of what we have.

We read a lot, but we don't view books as just something to read, but also something to collect. Much like some people collect and display coins or figurines, we collect books. So we also have a lot of very nice leather-bound, 1st editions etc.

We have toned down our spending the last two years or so because money is a little tighter than it used to be, but we still buy collector editions and support Kickstarter campaigns.