My social and entertainment life has involved alcohol for the last 10 years. There's been lots of alcohol and health related posts on HN in the last few days. As a result, I am going to stop drinking. It's worth noting I don't have a problem with alcohol or being around it.
For those of you who don't drink, how do you fill your Friday and Saturday nights?
FYI, I don't smoke or drink tea/coffee.
I did the exact same things I used to do except with no alcohol: bars, clubs, parties, whatever.
The toughest thing was realizing how...boring...some of these activities can be. There is, by default, an enormous amount of "down time" at a bar or club or young person's party; down time that people tend to fill by going to the bar for a drink, or sipping on a cocktail, or eventually by being drunk and letting the time pass.
The second toughest thing was realizing how irritating drunk people (and yes, this includes your friends) can be when you're sober.
But I stuck with it, and after a few months I learned different strategies for enjoying a night out--usually revolving around talking to other sober people, or dancing--and my life is much better for it.
Lastly, in my experience i didn't feel the full mental benefits of no alcohol until after about four or six months without a drop.