That person is not living life, but hiding from life. The person who drinks too much isn't focused on a responsible life lived for God, but is seeking to avoid the responsibilities of life which seem too great for that individual to bear. All addictions are sinful attempts to anesthetize life when our lives seem out of control. All addictions, including alcoholism and drugs, are the futile effort of avoiding and evading the responsibilities that God has built into life. Paul tells us not to fill up on alcohol, but to be filled with the Spirit.
People drink because alcohol is mind altering and mood altering.
When drunk they feel good for a while. Alcohol temporarily and artificially changes them. While high or intoxicated, people think that their problems go away. The truth is, their drinking only magnifies their problems. There are more problems to come back to once straight or sober.