Laffin,...Since you're so concerned, go spend your weekends outside the closest local bar. Thousands of people drive off drunk at 2:00 A.M. every night when they close down the bars. Make sure your phone is charged...
Been in an experience like that before where a coworker started to od at work, he came to work high on cocain and ate a bottle of no doze at work. Manager took him to the hospital and then dropped him off at home saying don't come back. The guy did comeback but that's a different story. My point being is there are ways of canning someone with out setting them free on the world drunk. You bring up bars but I did work in restaurants with bars and I can say I saw a few times where we deemed some one not able to drive and we called them a cab or had them call some one to pick them up.