[dlwdlw]

Personally I've always hated the concept of beer buddies because if you didn't grow up with it, it's an entirely different type of interaction with different expected levels of intimacy. the people who will pass the beer buddy test will primarily be people who grow up with its culture and creates a monoculture. Perhaps not mono-racial but definitely mono-culture.

[stevenjohns]

I think it really depends on where you come from. At my office in Sydney, Australia, I can say that the office "beer buddies" are extremely ethnically, religiously, politically and socially diverse.

The only things that are explicitly common would be a general appreciation for good beer and music. I wouldn't say it's monocultural, although it does tend to have a bias for people without (young) children.