Also, being disappointed with an actor is much more likely if you put them on a pedestal. A lot of trek fans engage in what I'd call "people worship", and so therefore it makes it incredibly hard for them to live up to your expectations.
I'm one of those people that has zero interest in meeting actors from Trek and getting their autographs. Such things don't mean anything to me, and paying money for a quick hello and handshake is silly. So my perspective is very different than a lot of Trek fans.