As said by EBarnacle, I buy books for friends who ought to read something I liked. When I was a lender I ended up buying some books three times, in order to re-read them when the urge came over me. The library I had to sell was 3000 or so paperbacks I'd read twice or more, plus a couple hundred I'd read once and was thinking about: keep or trade (twofer) at the used bookstore. I usually could give directions and quality reports on the used bookstores for three counties ;^)
I used to write "This Book Stolen From the Library of Jeff Smith" in the front of my books, but my friends just borrowed them anyway and laughed.
Hi, my name is Jeff,,,and I'm an unrecovering bookaholic.