After thinking this over, this effect may be due to hangovers. I don’t drink myself, so I don’t really know this firsthand, but in stories there’s always someone saying “I shouldn’t drink more tonight, I have work / school tomorrow.”
Or even more prosaically, “I shouldn’t drink more tonight, I need to drive home (and I’m not a rich person who always takes a cab or has a chauffeur)”.
After thinking this over, this effect may be due to hangovers. I don’t drink myself, so I don’t really know this firsthand, but in stories there’s always someone saying “I shouldn’t drink more tonight, I have work / school tomorrow.”
Or even more prosaically, “I shouldn’t drink more tonight, I need to drive home (and I’m not a rich person who always takes a cab or has a chauffeur)”.