Are you sure? I mean, that's @Morrus you're talking to ...
Anyway, I think one factor with these "I wish WotC would republish old settings" arguments is a desire for affirmation. "It's my favourite setting, and I want others to agree that it's amazing."
Otherwise ... you have the lore, you know the rules - update the setting for yourself to suit your own wishes.
Maybe a little, but I mostly think it's just that people genuinely enjoy the settings and like seeing them get updated.