Ambience makes a big difference to most golfers, to some I would say it's 50% of their experience. I heard a co-worker say he really enjoyed Bollingbrook GC because "the course was in great condition and that clubhouse is so nice for a public course!" Personally, the clubhouse was way overdone by a local mayor who used public funds to build a nice place for him and his buddies to hang out and the golf course stinks.
For me, I actually preferr a very minimal clubhouse and other "experience" things: food, pools, housing, etc... and have always said that I think golfing nirvana would be a club with a world renowned golf course and a hut for a clubhouse with just enough room for a bathroom and a fridge for the beer. Heck, just throw a fingerprint reader on the door and you wouldn't even need to hire a pro.
There is a high end club in South Carolina that when it was first built had a gravel road entrance, no homes, a "clubhouse" that was big enough for a couple couches/bar/fireplace and opened up in the back to the range. It was perfect! But in recent years they have built a very big (for the size of the membership) clubhouse that is barely used but is needed if they are going to sell their 100 or so homesites.