[mikestew]

But for really caring about something, there's nothing like worrying the spike in white blood cells in your very ill child might be diagnosed as leukemia on Monday.

Some folks are mature enough to develop empathy while completely child-free. Others must have it forced upon them via childbirth. It does, indeed, take all kinds.

[JoeAltmaier]

Maturing is due to experience. The snarky "forced upon" isn't a good description? It has to be learned regardless of the method. Hipster urbanites may have insulated themselves from emotional attachment to the point they're indeed less mature.