Is any age group more maligned than teenagers? As they roam in packs, they're feared, avoided or told to calm down. They're gawky, narcissistic, hormone-addled, shallow, angsty and entitled. And on top of all that: Have you heard? Smartphones are destroying their brains. Raised in the glow of digital devices, today's teens are depressed, anxious, antisocial and hopelessly distracted.