Many Bothans died to bring us this information...
Primarily it makes sense for first-level characters, and only until they go up a level or two. After all, what do your higher-level characters do with all those 1st-level followers? The level gap is so high that they aren't even useful as speedbumps against the high-CR monsters. Thus they get told off to guard the fortress, or gather info, or whatever.
Similarly, it's always seemed odd to me that, even though most small towns will have several 2nd- or 3rd-level NPCs, the newbie 1st-level PCs ALWAYS run off to confront the goblins or whatever on their own. If I knew ahead of time that I'd be facing an Ancient Evil, I'd want all the firepower on my side I could muster - so what if they claim most of the loot? It maximizes MY chance of staying alive...
Again, the key is not to have the Big Boys stick around - they go off to loot the dungeon while the lowly newbies are assigned to guard the horses (and have their own little encounter with a pack of wolves or some thieving goblins).
"Why can't you send Luke?" "Well, Luke has flown off somewhere without telling us where he was going - something about looking for yogurt I think. Meanwhile, we need info on this new weapon the Empire is developing..."