The word of God is a lot more than just letters.
John 6:63
It is the spirit that quickeneth; the flesh profiteth nothing: the words that I speak unto you, they are spirit, and they are life.
God's Word is so powerful. It is something we must must hold on to everyday of our lives. What sustains and strengthens our spiritual life is the word of God. People who do not desire to actively study the Word of God are those who do not want to grow spiritually because it is a necessary requirement for growth.
Growth does not happen overnight. It is not even a destination, it is a lifetime process. Those who stop growing are those who think that they know it all, but those who decide to keep studying and learning everyday make the sky that starting point. Study of God's Word is something we should make a habit, and not an occasional activity.