The far country symbolizes forgetfulness of God (Deuteronomy 8:11, 14, 19), the condition Paul describes as "alienated from the life of God" (Ephesians 4:17-19). All the dissatisfied young man wants to do is to satisfy his senses and desires. After disillusionment, destitution, and degradation, the prodigal, feeling no longer worthy to be called a son, decides to ask his father to make him one of his servants.
The far country is the place people go to remove themselves as far from God the Father as possible. It represents the world, the place where evil flourishes, where it is the norm, popular, and acceptable. In it, the perversions of society—lying, adultery, abortion, homosexuality, and many others—are tolerated and even celebrated (I John 2:15-17).
The far country signifies the abode of the ungodly, those with whom the prodigal son feels most comfortable. The righteous cause him discomfort because he cannot over-drink, smoke, cuss, or tell dirty jokes when he is with them. The godly stifle him because he feels pressured to produce the fruit of self-control. The far country is the state of mind that is enmity toward God (Romans 8:7).
Martin G. Collins
Parables of Luke 15 (Part Three)