All things being equal (money, space, etc), would you rather own copies of the books you read? Or borrow them?

I would definitely buy them.  I have a book buying addiction.  I love just looking at them all lined up on a shelf.  Surounded by a nice reading chair, a soft glow lamp, a cup of tea, and a comfy pillow, I would reveal in the beauty of the books.  Rarely, I would give away a very special book to a friend, but most would stay pretty on my shelf until I reread them.

Alas, I have neither money or space to buy books.  I borrow, and borrow, and borrow some more.