Time to time I will read the New York Social Diary to catch up on what everybody is doing. On my most recent visit, something occured to me- just about every event seemed to be some kind of benefit or award ceremony. Thus my question: whatever happened to the purely social event- held for personal reasons, a holiday, or "just because"? When the Vanderbilts snubbed the Astors, it wasn't over a cancer charity. Why the change?