Star Trek Convention

I don't know why, but there's something sad about comic/ horror/ science fiction conventions. Yes, they're supposed to be interest-/knowledge-based platforms for like-minded individuals to network and socialize (and also receive the latest updates/information on their favorite indulgences), but don't these people feel silly coming to such gatherings or communicating with the 'outside world' about, say, Captain Kirk and the Klingons? Shouldn't they move on with their lives, instead?