That's a question David Gammel asks in this post on ASAE's Acronym blog. He says,
I know, I know, we said similar things after 9/11 and meetings did, eventually, come roaring back. But he makes some good points, the most salient being that associations better pay attention to all this, at the very least. He posits one possible solution, but it sounds less than ideal because it relies on holding regional events with national speakers being beamed in via satellite. But if I wanted that, I'd go to chapter meetings. The point of the national meeting is to see all those folks who you don't see at the local level, right? I don't have any answers, but it sure is a good question to ponder.