Australia's much the same, and quite likely from the Scottish part of our history. We have special cultural associations with beer. Not any other alcoholic drinks, just beer, beer is special. Beer is used to settle disputes, it's used as a symbol of civility, people coming together and sharing a beer while they discuss their issues instead of attempting to murder each other. There's something pagan and sacred about beer.
This forms a large part of our drinking culture and a public event without beer is unthinkable, beer is the symbol of civility.