All other things (like price and storage space) being equal, given a choice in a perfect world, would you rather have paperbacks in your library? Or hardcovers? And why?
I generally don’t keep my books, so first of all I have to pretend I have a library. I do have shelves of books, but that’s just because I have a book buying problem…someday I’ll manage to read them all. At least I keep telling myself that.
But, to answer the question, I’m an equal opportunity book lover. I’d buy whatever caught my eye. Sometimes I see a hardcover and can’t wait to read it, so I’ll buy it. Other times, I’ll wait for the paperback. I have no problem mixing up formats in my giant to-be-read pile/pretend library.