Excellent question.
I'm 36, live in Los Angeles, certainly can't afford to join a club there but prefer to travel to golf anyway.
Most important factors for me:
(1) Golf only -- nothing else about a country club interests me in the slightest; growing up I wasn't allowed to spend time at my dad's country club, nor did I want to (despite the course being amazing); so definitely golf only
(2) No tee times or other red tape
(3) Remote location to avoid crowds and ensure fast play
(4) allow walking without having to take a caddy
(5) Basic food and snack options
(6) No cart snack service on the course, which I find annoying (even if the cart girls are hot)
(7) low initiation fee or flexibility on how to pay initiation fee over time
(
allows unaccompanied guest play
(9) kid friendly (though i don't have kids, private clubs of any kind that aren't appealing to youths make me nervous -- kids are smarter than adults i've found as i get older)
(10) would be happy to pay any costs that maintain the quality of the course and the property
bonus points: if you're allowed to bring your dog if it's not crowded
as if it's not obvious from my checklist, i love the recent trend of remote and simple and low maintenance private clubs like kingsley, ballyneal et al. i'm pretty sure this is the future of golf. or at least I hope it is.
my main priority in the years ahead is to be able to treat golf trips as complete and total relaxation... aside from the stress caused by my poor play. a lot of big city clubs just have way too much red tape for me.