When my wife and I married nine years ago this summer and moved to our new home, it took over two one-ton flat bed truck loads to move our books to the new house from our two previous houses. Since then, I've gotten rid of some old paperbacks from thirty years ago, but we have gotten around to some serious purchasing. I have no fear of tornados -- our home can't be lifted from its foundations.
LOL!! I'm a PhD student and my son is a well read FReeper who hasn't met a book about the economy or the Constitution that he didn't want to read. The books are taking over our grad student apartment and we've had to put some in storage.
I'm about to sign for my first tenure-track job and look forward to a house with a proper office/library. I've tried getting books from the library so they wouldn't pile up, but I want them to stick around, not just board with me for a few weeks. Amazon's used book option makes some books so inexpensive, you might as well buy them.