The rich you man walked away from Jesus because he could not give up his wealth, and I suspect many of us would stop coming to church if we honestly understood the change God requires of us. The truth is, most people don't make the most of life, because most of us are afraid of change, and afraid to change. And so even if we're not living the right life, or the best life, or God's will for our life, still it's the life we're used to living, and so we settle for less than God created us to be. God will change you over time, but he doesn't want you to waste your life on things that tear down and destroy your relationship to him in the meantime. Paul mentions not getting drunk on wine.
Alcoholism is a physical addiction, but it is also a very serious sin.
The alcoholic is not looking at life as a gift from God, but seeks to escape from the pain life causes. 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.