Yeah, teenagers have to go through a phase when they question authority, yours and societies, too. Remends me of the guy, who at his twenty first stood up and said "when I was 16 I used to think my dad didn't know anything. He's learned a lot in the last five years".
I think it's all related to risk seeking behaviour. Whenever you get cornered by some train spotter who berates you for having a dangerous hobby ("drain on the health care system, totally irresponsible" etc) remind them that if some of us didn't take risks we'd still be living in caves.
