I have been a part of golf course projects where grading around the 18th was re-worked to accomodate a clear line of sight from the clubhouse terrace. At courses where achieving that view was simply not possible given the routing, clubhouse site, or both, placing a green other than the 18th (usually the 9th) within sight of the clubhouse is a suitable compromise.
If not, what makes tallying your scorecard and enjoying a post-round beverage unique at the golf clubhouse, versus driving to a nearby restaurant or bar? From a purely financial perspective, the food and beverage operation certainly benefits from the 18th-clubhouse proximity. There is also the intangible benefit of extending the golf experience by watching other players finish while sharing stories from your round.
In a resort setting, a place like Pebble Beach gets it right by locating the pro shop at the 1st tee, with the Lodge overlooking 18. Kierland and Half Moon Bay provide a similar approach -- with the added benefit of bagpipes at sunset. The Home hole at St. Andrew's would be a close second in my book to Pebble. For the average golfer, a "gallery" environment provides added excitement; for the non-golfing spectactor, this may be their only exposure to the game other than TV.
Some good stuff here...