As a person in my mid-twenties, I identify strongly with the group described in this New York Times article.  I feel like I'm not a child anymore, nor even an adolescent, but I'm a long way from feeling like an adult.  I'm in between.  And I feel tremendous pressure to stop equivocating and grow up already, though nobody seems to want to tell me what that entails or how to do it.
I am reminded of Hobbits, who come of age at 33, and consider the decade or so before rather an awkward time.  It seems we're all more hobbity than we knew.