I, personally, enjoy races that are as far-removed from Humans as possible
. . .
As an individual who grew up in a very homogenious area, it's a culture shock to walk into a Big city with a large immigrant population - people of so many different colors, languages, cultures, it is amazing and intriguing and eye opening and at the same time disconcerting.
You find humanity, in it's infinite diversity, fascinating and a bit scary.
Yet in an RPG, humanity -- even with the traditional fantasy races along for the ride -- is too confining to hold any interest?
The reasons I'm not a fan of the cantina:
1) Humans are the most fascinating race of all, with so many options for culture and attitudes. The real world and all its history are your oyster if you play a human.
2) Traditional races have a ready-made background, history, and mythology to them, and fit into a "default" traditional game world. You can subvert the traditional roles and attitudes, or not, or mix and match, and get to interesting characters.
3) I don't like having too many rules. I think core works better and is eaiser to learn and manage. I don't play often enough that I've gotten bored of the rules or bored of the usual choices. I think the "jaded" once-or-twice a week playing cantina-ists and build-ists are the cause of rules bloat, and killed my beloved pre-4e game, decades before I ran out of things to do with it and happiness from buying new adventures.
4) My impression (possibly incorrect), is that people are getting in-game rules advantages from cantina-ing, but not getting penalties. Even in a "default" world, a cantina approach seems to mean its fine to be a drow, and no one really minds it or punishes you for it -- in other words, your race doesn't actually MATTER from a roleplaying perspective. Races become "skins" to put on builds, instead of actually having a roleplaying meaning in the reactions of NPCs and your role in the world, and the spectacular and extraordinary becomes the everyday and ignored.
One cantina character -- the one drow or dragonborn in a world where the other PC's are traditional, the world is traditional, and the world is surprised to see the extraordinary PC -- that's fairly interesting.
But when everyone is special, no one is.