"grow up' refers to evolving and how your species has itself a paradox it can't seem to escape. As animals we exist because of our drive to procreate, dominate, survive, and generally we tend to think of our own lives first and foremost in a crisis...all dictated by our genetic heritage. Probably the main reason we have dominated the planet is not only intelligence, but our lust for violence, social interaction, and sex.
On the other hand humanity is striving to become 'civilized'. That is to shed the primitave urges and wants we have and become something more than animal. Religion is based on this a great deal...with many religions basing their most pious acts in those that reject the urge to eat, breed, and want for our own survival. Fasting, celibacy, and dedicating one's entire existence to shutting off the connections with the world to become closer to god.
What you see as a resoultion is a metaphor. That aside from subspecies being confused with breeds. We are all still the same species, and except for a small island somewhere along the equator ( I can't recall the name) we all share even a common female ancestor.
We do have breed characteristics that, like other animals, is mostly related to geography.
If humanity never evolves, we'll be animals to the end of our species and nothing more than that...worrying about sex and violence, protecting ourselves from invaders, wanting to take someone else's property or wealth...get them before they get you....in a sense we're doomed from the start because they very things that make us who we are, are destructive in many ways. If we rid ourselves of them, we may die out if we lose that strong urge to live, the urge to survive whatever the cost so that we may create more of ourselves.
On the other hand, can humanity manage to stay the way it is and not destroy it's own species?
The nuclear bombs (for protection only

) say we have grown too big for our britches.