Huh... come to think of it, in all the circles I've moved in, I've never known anyone who's been a member of a country club. Timeshare condos, yes... but not a country club. I have no idea what kind of people join them, other than that they don't seem to be my kind of people (which matches with what the rest of you are saying).
And a 30K joining fee?! Wow.
Do you want the networking aspect, or do you just want to play golf? I'd say it would be more worth it to join a golf club and the YMCA, if that's all you want.