I've noticed that heavy drinkers tend to cluster with other heavy drinkers. The more you see your friends and coworkers binge drinking regularly, the more you feel it's an acceptable and even common behavior. Likewise, non-drinkers tend to cluster with each other because it gets tiresome to have friends who want every event to revolve around alcohol.
Statistically, the median drinker in the US doesn't drink much alcohol at all. The vast majority of alcohol is consumed by the top 10% of drinkers. You may have simply ended up with a cluster of heavy drinkers that aren't representative of the median US alcohol consumer.
Statistic here: https://www.washingtonpost.com/news/wonk/wp/2014/09/25/think... Note that the median US alcohol drinker consumes less than 1 drink per week.