The reality though, is that its appeal is more the 'exclusivity' factor that wins this card fans. The buzz of being part of an "invitation only" club and carrying a really cool looking card. The benefits all have value, and that's partly how you justify it, but if you are truly honest with yourself, you probably already get all of those benefits without the card.
If you qualify for the card, you probably already travel a lot, probably in J or F, so you already get premium lounge access. You probably already have premium hotel membership (and better than gold SPG), probably with several brands, or you prefer to frequent the more exclusive or boutique hotels who stare down at loyalty programs. You have chauffeur driven cars arranged for you in advance and at your beck and call for each trip. You don't need a concierge service for last minute restaurant bookings (you probably have a pretty good PA by now anyway), you already have dinner invitations for most nights of the week, and when you have a last minute urge to get into a 2 or 3 Michelin star restaurant, the theatre, or some international sporting event, you call up one of the investment bankers you have on speed dial.
So generally, it's a very expensive, but cool looking, metal plate, that has the added benefit of getting you service at the bar in the Raffles hotel or in a Hermes store when you're dressed in cargo pants and a t-shirt.
Let me know if you disagree...
Cheers,
JOBU