Less than a dozen, out of the gazillion books currently littering my house.
Books are expensive, so I tend to read them even if I’m not really “into them,” just to see if they end up being worth the purchase price. A book has to REALLY SUCK for me to just abandon all pretense of slogging through it.
There are a few few books that I never get around to, either b/c they were gifts, or b/c they were on clearance. (I take risks with clearance books; they don’t always pay off.)
One of the most annoying pretenses people can have is the tendency to pick up classics, or books they think would look “cool,” and then prominently display them but never actually read them. (This is not directed at the OP; I’m just venting.) My dad is such a person; he has ayt least five 6’ bookshelves full of $30 hardcovers, covering just about every subject…and he’s probably only read a third of them. This is seriously goofy; why would anybody collect books and then not read them? To me this is just as bizarre as collecting hair products. Makes no sense.
Me, I don’t care what my bookshelf says about me; I buy cheap paperbacks, worn-out used books, classics, trashy novels, obscure non-fiction…there are books everywhere and most of them aren’t pretty to look at. I really don’t care. 99% of them are dog-eared and loved and then shared with people I think would like them.