Imagine you're in your Coffee & Donuts hall after Mass, and a bunch of regular conversations are going on.
Then you notice a few people are whispering to some people sitting down, and pretty soon a bunch of people have disappeared into an adjoining room to have a private meeting. Wouldn't THAT be the place you'd most want to be? Wouldn't you assume the most "interesting" or "important" discussion is going on in that elite group having their secret meeting?
Sure, the rest of the parishioners in the main Hall are continuing to discuss the Liturgy, politics, today's Mass, school, activities, children, family matters, etc., and those conversations are well & good. But who wouldn't be tempted to know what's being discussed in that SIDE ROOM? If you're honest, you will admit "of course I'd be curious!".
Well, if CathInfo is a Coffee & Donuts hall, the side room where the authorities can't eavesdrop is the Members Only subforum.