I nearly never drink more than one glass of wine in one setting, but I also nearly never drink more than one beer in one setting either, yet on the rarest of occasions, I will have at least two hard liquor drinks in one setting. Strange.
I suppose consumption might depend on a variety of factors, including how much time one has available, whether or not one has quenched one’s thirst otherwise, and perhaps the cost if eating out, among other variables.
Mostly when I see people drinking wine, beer, or liquor it’s a social gathering, so that may impact how much someone drinks as well.