Halfling kinda push the ewhole point in favor of exotic races.
Thing about it.
Halflings are a race of small humaniods who look like humans but (1) prefer to stay home. Only a few even like leaving home and it's only via curiosity. But even THEN halflings don't act, they watch in amusement (2), And even then, halflings don mess with stuff, they don't conquer or hunt or build or destroy (3). Oh and they suck at fighting fair (4) and have no magical history in their culture, arcane, clerical, or otherwise (5).
So why are a bunch of small passive homebody pranskters with little natural combat talent the third race list in a game about adventuring? If anything, they embody an NPC race more than orcs, tabaxi, tortles, and half-giants combined. The 5 weirdos that build the foundation of their inclusion in the game don'tdo enough to promote them to even inclusion in the PHB.
If D&D were influenced first by Journey to the West before The Lord of the Rings, there'd be little people pushing for hobbits or halflings in the Player Handbook as a common race for player character adventurers.