As Christians we are people of The Book. We are to be in the Scriptures and to be people that love the written word, since this is the way that God chose to reveal Himself to men.
Out of a love for the Word of God often flows a love for literature that strengthens our love for the Word and the God of the Bible. God has given us 2000 years of post-resurrection literature that stands as a testimony of His love and faithfulness to His bride. When asked about what Christians should be reading, Charles Spurgeon replied:
As the apostle says to Timothy, so also he says to every-one, 'Give yourself to reading.' ... He who will not use the thoughts of other men's brains proves that he has no brains of his own... You need to read. Renounce as much as you will all light literature, but study as much as possible sound theological works, especially the Puritanic writers, and expositions of the Bible... the best way for you to spend your leisure is to be either reading or praying."