One thing I love about borrowing library books is that if I take out a book I don't like, it's cost me nothing and I can just take it back; someone else will enjoy it and it will cost them nothing, too; the author still gets paid. Win-win-win.
Tom CoxAlso, if you borrow an author's book from a library in the UK, that author gets more than 12 pence per loan in Public Lending Rights. Any author can earn up to £6,600 per year this way.