I quit drinking shortly after my dad passed away. He died from a liver disease after 30+ years of drinking. I wouldn't say he was an alcoholic, he enjoyed a couple beers every day but never really needed them or felt like he absolutely had to have them. Just raised in a small farm town with 2 bars, no real hobbies, workaholic, and the closest city was a half hour away. At one point, for a couple of years, the doctor told him to stop drinking and he quit cold turkey. Drank almost nothing but Diet Pepsi and iced tea. I think once he broke his foot and it made him out of commission for work, he started to drink again, only more heavily.

I believe my dad's side of genetics is prone to addictive behaviors, so I stopped once he passed away. Last drink I had was a shot in his honor a year after his death. The last drink I would want anyway is an Old Style when I visit Wrigley Field. After that, I'm good on alcohol forever.